[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/thieflogo_7358.png]]

->"''To see a Keeper is not an easy thing, especially one who does not '''wish''' to be seen.''"

Originally developed by Creator/LookingGlassStudios, ''Thief'' is a medieval-themed trilogy of first-person [[StealthBasedGame stealth action games]] starring an [[AntiHero anti-hero]] named [[DeadpanSnarker Garrett]] as he goes about [[PhantomThief stealing stuff]] in an ancient, [[CityNoir noirish]] and unnamed[[note]]Only known as "The City"[[/note]] [[MedievalEuropeanFantasy medieval-esque]]/{{steampunk}} city. Each game consists of a series of missions that begin with little or no connection to each other but eventually become part of an over-arching plotline concerning Garrett saving the world from a great evil.

The series is especially notable for the [[WideOpenSandbox relatively free exploration allowed within the boundaries of each scenario]] and the many ways the player can approach the given objectives. {{Self Imposed Challenge}}s, such as [[SpeedRun completing objectives in as short time as possible]] or [[StealthRun completely avoiding detection]] [[PacifistRun and confrontation]], are popular among the more devoted fans. The games are loved for the convincing and engrossing atmosphere they create by taking usually Victorian SteamPunk and giving it a dash of medieval flavour, making for a truly unique and interesting setting. The ''Thief'' series has a strong following and many elaborate fan-made scenarios have been created.

This devotion eventually led to the creation of [[http://www.thedarkmod.com The Dark Mod]], a total conversion for ''VideoGame/{{Doom}} 3'', turning it into a stealth-based game like ''Thief'' with even more fan-made missions.

!!!The installments in the series so far:
[[index]]
* ''VideoGame/ThiefTheDarkProject'' (1998) - Developed by Creator/LookingGlassStudios. Published by Eidos Interactive.[[/index]]
** ''Thief Gold'' (1999) - Basically an UpdatedRerelease of the above, adding 3 new missions and lots of bugfixes and additional goodies[[index]]
* ''VideoGame/ThiefIITheMetalAge'' (2000) - Developed by Creator/LookingGlassStudios. Published by Eidos Interactive. Was the last published game of LGS.[[/index]]
** ''Thief II Gold'' - Cancelled after Creator/LookingGlassStudios went under. Would have been in the same vein as TG. Some fans of the series have been making plans to do a FanRemake based on existing documentation.[[index]]
* ''VideoGame/ThiefDeadlyShadows'' (2004) - Developed in Ion Storm Austin mostly by the same team who worked on the first two games. Published by Eidos Interactive.
** ''Thief: Deadly Shadows Mobile'' (2004) - A mobile game tie-in to the above.
* ''VideoGame/{{Thief|2014}}'' (2014) - A [[ContinuityReboot reboot of the series]] for the PC, PS3, PS4, {{Xbox360}}, and {{Xbox ONE}} developed by Eidos Montreal. [[http://www.gameinformer.com/b/news/archive/2013/03/05/april-cover-revealed-thief.aspx Announced in April's issue of Game Informer]] with all manner of shiny screenshots and even a reveal trailer.
[[/index]]

The first three games can be found on GOG and Steam, so you [[AvertedTrope don't]] [[KeepCirculatingTheTapes have to fret about finding physical copies anymore.]]

[[TheWikiRule The series also has its own]] [[http://thief.wikia.com/wiki/Thief:_The_Dark_Wiki Wiki]].

For an overview of the series' [[LoadsAndLoadsOfCharacters many characters]] [[FactionCalculus and factions]], go [[Characters/{{Thief}} here]].

----
!!This game series provides examples of:

* AbnormalAmmo: The four available elemental {{Trick Arrow}}s, which use magic elemental crystals as their arrowheads.
* AbsurdlySpaciousSewer: The Downwind Thieves' Guild is headquartered in the sewers beneath the Overlord's Fancy tavern and illegal casino.
* AdjectiveAnimalAlehouse: "The Crippled Burrick Inn" from the second game. (Burricks are the appropriately [[LowFantasy down-to-earth version]] of [[OurDragonsAreDifferent dragons]] in the game's universe.)
* AdvancingWallOfDoom: A Keeper outpost in the first game has one as a booby trap.
* AdventurerArchaeologist: The elder civilizations aren't going to need those shiny things any more, are they ?
* AerithAndBob: The character names (and surnames) in the series' universe run the whole gamut. From common-sounding names of European or Asian origin and more rare RealLife historical names to more fantasyish MyNaymeIs variations or outright abstract, figurative or descriptive names.
* TheAlcoholic: A [[ComplainingAboutComplaining grumpy]], [[TooDumbToLive naive]] and [[PluckyComicRelief overall hilarious]] guard [[FanNickname nicknamed]] Benny (a.k.a. "Dumb guard") in practically ''all'' his incarnations. [[RuleOfFunny Played for laughs.]]
* AllInARow: A few groups of police and guards act this way in the second game, e.g. Cavador's bodyguards follow Cavador.
* AllMythsAreTrue: The existence of some of the mythical antagonists certainly fits this trope. And The City itself is a place where many a local area [[ShroudedInMyth has its own set of local myths]].
* AllWebbedUp: One type of the [[GiantSpider big arachnid]] enemies in the first game has this as his special power. It's better not to even get too close into his firing range and [[OneHitKill snipe him]] with the bow from a safe distance.
* AffablyEvil: The BigBad of the first game - especially until the dramatic [[TheReveal reveal of his true self]].
* AlwaysNight: Given [[FantasticNoir the tone and atmosphere]] of the series and your character being a shadow-utilizing thief, this is [[JustifiedTrope justified]]. Only two missions in ''The Dark Project'' are set during daytime, and even in those, you spend most of your time indoors or in an abandoned old mine. The later games mostly offer glimpses of dusk at best, and usually only during cutscenes.
* AncientTomb: The missions "Down in the Bonehoard" and "The Lost City".
* AntiHero: Garrett claims to be simply looking out for himself, but it is always up to him to save the day. Granted, revenge also has something to do with it.
* ArcWords: See the page quote.
* ArcherArchetype: The bow is one of the most useful and important pieces of equipment in the game. It's often more of a tool than a weapon, especially while using the more special, stealth-related [[TrickArrow trick arrows]]. If a player's good at estimating distance and arrow arcs, he can even achieve a clean OneHitKill by shooting guards in the head or upper part of their body.
* ArtifactOfDoom: [[spoiler:The Eye. ''Twice.'']]
* ArtificialBrilliance: The series is well known and highly respected for the impressive AI of its [[{{NPC}} NPCs]].
** On the hardest levels, forget them reacting to blood on the floor. The guards will get suspicious ''if a door is open that shouldn't be open''.
* ArtificialStupidity: But on the other hand you can play some mean tricks in the first game. They won't notice torches that have been put out, the sudden appearance of moss on the floor or loot disappearing right under their noses. They are also more alerted by someone stepping on metal [[TheGuardsMustBeCrazy while not being alerted]] [[AcceptableBreaksFromReality by sounds of their fellow guards getting knocked out. In addition, the majority of the guards seem to have night blindness and surprisingly cannot spot the player if he's in the dark even if light backgrounds are behind him]]. The second game fixed some of the more obvious AI bugs, but most of them were fully dealt with only in the third game (where guards can even notice suspiciously opened doors, suddenly disappeared loot and other strange changes to the enviroment). Still, the AI is appropriately curious and unforgiving in all three games.
* AscendedFanboy: By the times of ''Deadly Shadows'', Garrett seems to have a lot of admirers among co-workers as well as foes. One petty crook tries to pass himself off as Garrett to a possible customer (and fails). A female example that occurs is Marla Madison, a young fence that is basically Garrett's "[[LoonyFan greatest fangirl]]". Predictably, Garrett has a good laugh at the impostor's expence and is fairly annoyed by Marla's ditzy advances.
* {{Atlantis}}: Two visits to a long-lost underground city that used to be inhabited by [[spoiler:The {{Precursors}}]]. And in ''Deadly Shadows'', the sunken city of [[spoiler:the Kurshok]].
* AwesomeYetPractical: Sneaking past various threats undetected and non-lethally dispatching enemies with a single blow to the head from your trusty blackjack.
* BackStab: Mooks tend to react negatively to corpses they find, though. It should be pointed out that this game series does not encourage backstabbing, sometimes to the point of initiating a NonstandardGameOver for killing of any kind, unlike pretty much any other StealthBasedGame. ''Usually'' that's only if you're playing on the highest difficulty setting -- although there are some levels where you auto-fail the mission if you're detected even once, or leave behind ''any'' trace of your having been there. Dead bodies count as traces.
* BadassNormal: Garrett. Gods, monsters, and many far more heavily-armed and better trained soldiers fall prey to his razor-sharp cunning.
* BadassBookworm[=/=]MinoredInAsskicking: The Keepers.
* BadMoonRising: The second-to-last mission in ''The Metal Age'' has a red full moon in the night sky.
* BagOfSpilling: In the first two games, Garrett loses whatever consumable resources he has when finishing a level, and any gold he fails to spend when starting one.
** This was a deliberate decision made by the designers in order to encourage players to buy lots of equipment and then go ahead and use it during missions instead of hoarding it for later, or alternatively having such a large stockpile that they never need to fear running out. No justification given, just an attempt to invoke RuleOfFun.
** Garrett loses [[spoiler:Constantine's Sword]] between the first and second games, but this doesn't seem to be an issue since all it did was let you kill undead and his regular sword does that just fine in ''The Metal Age''. Alternately, it ''is'' the same sword, Garrett just stopped calling it by its full name since [[spoiler:it belonged to the guy who ripped his eye out and tried to kill him.]]
* BankRobbery: The sixth mission of the second game is one of these. Oddly enough, the main target is not money, but an incriminating recording. Still, there's plenty of cash to be picked up.
* BeastlyBloodsports: You can eavesdrop on a conversation between two guards discussing bear fighting; one will lament that he remembers fighting bears being more savage when he was younger, and the pit owners didn't need to give the bears paw hooks or razor collars to keep the fights interesting.
* BeastMan: Quite literally - the animal-descended fantasy humanoids in the game's universe are referred to as "beastmen". Most of them are in allegiance with the Pagans and often even live amongst them and serve in the Trickster's army.
* BedlamHouse[=/=]AbandonedHospital: [[spoiler:The Shalebridge Cradle]] in ''Deadly Shadows'' was this before it became an abandoned wellspring of evil, but ''after'' it was an [[spoiler:orphanage]]. Notes left around the place tell how bad it was. WordOfGod (Jordan Thomas, overall director and designer of the level) was that its creators honestly meant well and were quite forward-thinking, but tremendous costs, the class divide, primitive techniques and a series of disasters turned the place into a nightmarish cage. For example, [[spoiler:a clockmaker checked himself in after a nervous episode, was treated, and pronounced fit to leave. Due to a mix-up, he was then ''accidentally'' given extremely painful electroshock therapy, turning him into a massive headcase who had to be locked up with the most dangerous patients.]]
* BerserkButton: Though Garrett is the epitome of a cynical and seemingly self-centered DeadpanSnarker AntiHero, he often displays shock and outrage when confronted with violence against innocents or the helpless. Cue TranquilFury.
* BilingualBonus: The name of the mechanist Precursor City excavation project's head honcho, Cavador, means "digger" in Spanish.
* {{Bizarrchitecture}}. Constantine's mansion in the first game (the level is called "The Sword). The first floor and forward area of the mansion appears normal but the further you go, the more weird it gets. Some examples:
** In the ''Gold'' version, the Brobdignag section. (There is a Lilliputian section as well.)
** Large sections of the upper floors are rotated so that, e.g. the ceiling looks like a floor and vice versa, including having upside-down or sideways furniture.
** In the greenhouses, search the ceilings until you find the section that is actually water. You can climb up through it into a tub of water in the room above.
** In the deepest part of the mansion, weird twisting tile hallways and perspective-warped corridors are interwoven with mossy green tunnels going straight through the structure. At this point, the thought may strike that the architect is just screwing with you. [[spoiler:And he is - it's all a test.]]
** When you visit the mansion, it's possible to encounter a doorway opening on what appears to be outer space, with distant and apparently unreachable fragments of mansion hovering in the starry void.
* BittersweetEnding: These seem to be the standard. But then again, Garrett apparently [[EarnYourHappyEnding earns his happy ending]] at the end of the third installment. [[AndTheAdventureContinues Sort of]].
* TheBlank: [[spoiler:The Shalebridge Cradle in ''Deadly Shadows'' has the staff of the orphanage-turned-asylum, shadowy silhouettes created from the memory of [[GeniusLoci the Cradle]], representing the faceless authority of the adults keeping order between the children and patients.]]
* BlindedByTheLight: Flashbombs and flashmines available to thieves, though we only see Garrett using them. They're useful for temporarily incapacitating civilians, guards or even certain kinds of monsters/creatures, allowing Garrett enough time to flee and avoid getting caught. However, if you throw them clumsily, you can [[HoistByHisOwnPetard blind yourself as well]], though only very briefly.
* BloodOath: When Viktoria and Garrett forge a truce in ''Thief II,'' they seal it with this. [[spoiler:It's more of a "Sap Oath" in Viktoria's case, since she's a dryad and bleeds sticky green fluid.]]
* BlowGun: A certain type of (relatively harmless) enemy uses them in ''The Metal Age''.
* BodyHorror:
** Well, there are the zombies, in all three games. But particularly the first.
** The Mechanist Servants in the second game. Being made into one of these is so horrific, [[spoiler:some will thank you for killing them]].
** The [[spoiler:Necrotic Mutox]]. You never actually see it used on a person, but you hear it. The person it is being demonstrated for reacts with both horror and fascination.
** Pretty much anything to do with [[spoiler:The Hag]] in Deadly Shadows. [[spoiler: She does much worse than eat children alive. In fact, eating a child alive would be kind compared to what she does to at least one. Then there's her body, which is a vaguely humanoid mass of flesh studded with eyes and mouths, most of which do not appear to be under her control.]]
* BookEnds: The beginning of ''The Dark Project'' and the end of ''Deadly Shadows''.
* BookcasePassage: Lots of these, both literal and more figurative examples. Some of them are opened by hidden buttons and levers, but some can be opened as easily by slashing them several times with the sword.
* [[TapOnTheHead Bop On The Bonce]]: With a [[CarryABigStick blackjack]]. Hitting an unaware target with the blackjack will knock him/her out quickly and quietly. (If they're aware, they cannot be knocked unconscious but can take damage, although the attack is less effective than if they were unaware.) Though even if you use the blackjack(at least in the first game) when a guard finds an "unconscious" person they'll loudly announce that someone's been murdered. The intention might be to render them unconscious but for all you know you are delivering a lethal blow more often than not.
%%* BondVillainStupidity: In the first game, Garrett is left injured and trapped just before the mission "Escape". He tied Garrett up as live prey for...''something''...his rescue came at the hands of two Keepers, however, something not even Garrett himself anticipated.
* CanisLatinicus: The Hammers have their "[[YeOldeButcheredeEnglishe ye olde"]] style of speech, the Pagans talk in a [[YouNoTakeCandle childish pidgin]] and the Keepers (during the events of the third game) revel in some sort of faux-Latin while reading the ancient scrolls and textbooks from their library.
* TheCaper: Some levels (or groups of levels) are definitely full-fledged capers. Others are simple "pick the lock and loot what you find inside" missions.
* CarryABigStick: This is probably one of the few game series where the protagonist's most iconic weapon is a [[http://en.wikipedia.org/wiki/Baton_%28law_enforcement%29 blackjack]] - i.e. a simple wooden cudgel for knocking out people - rather than his sword or dagger.
* CentralTheme: Several, but the main overarching theme of all three installments so far was the "fall from grace" motif of the three major factions of the setting. Each installment explores what happens when one particular faction gains too much power or becomes too corrupt or too decadent for their own good and the good of the rest of the world. In each installment, Garrett needs to help defeat the extremist part of a faction or stop the spread of corruption within a faction. This goes hand-in-hand with the [[CharacterDevelopment gradually built-up theme]] of Garrett as a relatively TrueNeutral hero in a world full of opposites and divided loyalties.
* CherryTapping: On the score screen of each mission in the first two games, you receive separate bonus points ''[[TapOnTheHead for blackjacking people]] [[CrazyAwesome while in mid air]].'' It's actually easier to achieve than it sounds. Just prepare your blackjack for a swing and leap towards your unsuspecting victim from behind.
* TheChosenOne: A large number of Keeper prophecies revolve around Garrett, and at the end of ''Deadly Shadows'', we discover why. Note that this doesn't mean he had or has supernatural powers. Garrett only acts, in the end, as the ultimate balancing agent. Whenever any one faction gains too much power, he topples it. Garrett may be TheChosenOne according to others, but he certainly [[RefusalOfTheCall acts and thinks of himself]] [[TheUnchosenOne as the opposite.]] Until the end of ''Deadly Shadows'', when he accepts his fate - though not without much grousing and grumbling and sarcasm.
* CityOfAdventure[=/=]AbsurdlyCoolCity: Hoo boy. Lots of interesting and varied areas to visit, including the region surrounding the city. The third game even had [[WideOpenSandbox a sandbox game feel to it]] - you could walk around a few select streets in the core quarters of the City, loot various establishments and bypassers, or sell your loot and purchase new equipment in hidden thievery shops.
* TheCityNarrows: Several of the poorer burroughs and quarters.
* CityGuards: The ubiquitous [[ExactlyWhatItSaysOnTheTin City Watch]].
* CityWithNoName: The aptly named "The City" (as in, that seems to be its actual name). However, the City definitely has named boroughs (Shalebridge, Auldale, Old Quarter, etc.).
* ClingyMacguffin: [[spoiler:Once again, The Eye (especially after it reappears in the third game). Are you seeing a pattern here?]]
* ConstructedWorld
* ConvectionSchmonvection: Garrett has no trouble delving in caves half-filled with lava as long as he remains on solid ground. But should even his little toe actually touch lava, he drops dead instantly.
* ConvenientlyAnOrphan: Garrett. We know nothing of his earliest past or who his parents were. Nor does he. When we first see him, he's already a ten or twelve year old street urchin, and there is no hint whatsoever who he may have been before that.
--> ''I was a kid. No parents, no home. Running messages and picking pockets to keep my ribs from meeting my spine.''
* CoolButInefficient: The grenade-launching robots seen in the second game can be tricked into destroying themselves by firing their grenades into the wall they are pressed against. Also, they can be disabled by water arrows in the ''open boiler on their back''.
** This weakness is mentioned within the game; apparently the smith just never got around to fixing it.
** What's more strange is that those big ugly death machines can be broken easily by StuffBlowingUp (if you have enough), but the annoying "steel cherubs" cannot.
* CoolSword: Subverted with Garrett's standard sword (or, in the third game, his dagger). It's a completely average, not very flashy weapon, though a useful and competent one for certain situations. Played straight a bit more by [[spoiler:Constantine's Sword]], which Garrett acquires (for a time) during the events of the first game. It deals more damage and while it has more dim colours, this is actually an advantage - unlike Garrett's classic sword, it doesn't shine when exposed to light sources. This makes it stealthier when unsheathed, even while hiding in shadows.
* ConspicuouslySelectivePerception: The entire game mechanic is built around {{NPC}}s failing to notice the player character if he is in shadow, while being extraordinarily sensitive to noises he makes himself and oblivious to noises made by machines set in motion by the protagonist. The Keepers, and Garrett, as an ex-Keeper, have quasi-mystical ninja powers, and [[spoiler: the loss of all Glyph magic later]] implies that the stealth powers are non-magical, as well as the fact that young Garrett [[spoiler: (and later, the young girl)]] can see Keepers. Not to mention the fact that Garrett continues to possess his stealth capabilities even while [[spoiler: hiding in the Cradle's Memory (the past) while carrying a Toy.]]
** The Keepers ability to hide buildings is magical. The Keeper Tower [[spoiler: was invisible to the city until it lost its glyph protection]].
* CorridorCubbyholeRun: When faced with corridors in indoor environments, Garrett has to hide from patrolling guards/monsters/zombies/etc. by dodging in and out of rooms, into alcoves, and so on.
* ContinuityNod: Lots within the entire series, often with a MythologyGag or two. They're a common part of the series - so much, that the fans were actually pretty annoyed when the third installment didn't reference some major aspects of the second one (i.e. the Mechanists) as much as they were expecting.
** There are two main nods to Thief II in Deadly Shadows. First, the viktrolas in the Wieldstrom Museum the play recordings of Karras' voice which contain screaming and Karras repeatedly saying "repent." The other is a readable in the Hammer cathedral that, to the annoyance of the player, says that the Master Builder was responsible for [[spoiler:taking down Karras in the last game.]]
* CrapsackWorld: "[[FantasticNoir Noir]] [[DarkFantasy Fantasy]]" describes it well. Everyone has an agenda, they conflict constantly, and even just living day-to-day is perilous. The nobles play games and see the poor as little more than animals, it's hard to distinguish between the keepers of the law and the actual criminals, and ''things'' live in the shadows and beyond the City's borders that you're better off not meeting...unless they decide to come to you. Then there's no 'better off' at all.
* CrazyPrepared: The Keepers in the first two games. The third... not so much. Kind of justified by the fact that it was their turn to undergo a major crisis, just like the Pagans in the first game and the Hammerites in the second. Though, technically, [[spoiler: the Final Glyph is itself an example of Crazy Prepared: if someone like Gamall does what she did, wipe out all Glyphs to prevent them from being used for evil]]. The Keepers in the third game had problems merely because [[spoiler: Gamall herself was crazy prepared and erased all information as to the reason for the Final Glyph]].
* CreepyChild[=/=]EmotionlessGirl: Gamall, the Keeper Translator, a 10-year-old girl, from the second and third game. [[spoiler:She gets a pretty shocking {{Reveal}} during the course of the third game.]]
* CrushKillDestroy: In ''Deadly Shadows'':
-->'''[[spoiler:Stone Guardian:]]''' ''A noise... and find and crush and '''KILL AND CRUSH AND KILL!'''''
* CrystalDragonJesus: The Hammerites are essentially your typical medieval Christian church [[{{Expy}} Expys]], but with a few twists on their mythology: The belief that the Builder (the one god) led humanity out of savagery by the gift of fire and more advanced tools like the first hammer, slightly mirrors the ancient Greek myth of Prometheus. It's also the reason why Hammerite rituals and worship are centered around human work, handicrafts and industry... And a possible explanation for the whole steampunk feel of the world.
** It's pretty obvious that the Hammerites are primarily based on the conservative Catholic church of medieval times, whilst the Mechanists seem to be more or less the Protestant equivalent, with [[NinjaPirateZombieRobot Karras being a sort of steampunk Martin Luther or John Calvin]], only more misanthropic.
* {{Cult}}: The [[ExactlyWhatItSaysOnTheTin Pagan]] faction, which shuns advanced technology and the society of the City. They worship nature and its incarnate deity - the legendary and powerful, but chaotic Trickster, who despises industry and the working of steel. Needless to say, Pagans don't get along very well with Hammerites and the feeling is mutual (despite some rare instances of WorthyOpponent between the two factions).
** The Mechanists in the second game. Essentially a [[EvilCounterpart much darker]] and [[KnightTemplar even more self-righteous version]] of [[NotSoDifferent the Hammers]] (of whom they are an offshoot). [[CrystalDragonJesus The Mechs are partly based on some of the progressive, yet at the same time dogmatic Calvinist sects of Protestantism]]. Mechanist [[MachineWorship worship of technology]] and the leader figure of the church (Karras) borders the fanatical, and gradually goes off the rails... On the other hand, they seem to be progressive in things like gender equality (owing to their quasi-Protestant nature) and "donate" their technology to a number of major institutions and noble families in exchange for favor, including the Watch [[spoiler:which is all part of the plan]].
* CuteGhostGirl: [[spoiler:Lauryl from the infamously haunted Shalebridge Cradle isn't all that scary once you get to know her in ''Thief: Deadly Shadows''. She's a subversion of sorts, since she appears as a ghostly blob of light with the shadow of a small girl. She's helpful and kindly, showing Garrett various clues about the Cradle's dark past and guiding him out. After both of them leave the Cradle and enter the alleys of Old Quarter, the guards start fleeing in terror at the sight of Lauryl's ghostly appearance. For once, Garrett can take it easy with stealth in the City's streets. [[RuleOfFunny Funny stuff]].]]
* DarkIsNotEvil: GrayAndGreyMorality. Light's just not any ''better''.
** In a more literal sense, most games condition players to be nervous around very dark rooms and more comfortable in well-lit areas. In this game, it's the opposite: darkness is very ''good'', and light is to avoided whenever possible.
* DeadMansChest
* DeadpanSnarker: Garrett, who is known for his cynical, sarcastic view on life among over-serious and righteous people.
* {{Deconstruction}}: Of several fantasy tropes.
* TheDevTeamThinksOfEverything:
** If you never [[spoiler: sell the Kurshok Crown]] in ''Deadly Shadows'', you won't have to [[spoiler: steal it in the final level]]. But they don't make it easy for you: [[spoiler: if you didn't sell the Crown, but head for the fence who buys stolen jewelry after exiting the Museum with all the other loot, you can accidentally sell the Kurshok Crown and break the ending because you cannot buy back the Crown.]] So the seemingly hard way is actually the easier way: [[spoiler: If you do sell the Crown, and have to steal it from the Museum, the Crown becomes a protected item and you will be unable to accidentally sell it, a handy feature in the chaos and confusion at the end of the game.]]
** In some levels, you can steal every key from a guard, have them chase you into a locked room, then quickly leave and close the door. Doing so will ''lock the guards into the room so they can't leave'', giving you free reign over the house. In fact, this is the best way to deal with the [[spoiler: golden baby]] in ''Thief II''.
** If you were forced to kill someone and had already hid his body, but the blood stain is still in sight and could give you away, you can shoot water arrows into it to wash it away. And, in the third game only, shooting moss arrows at pursuing human enemies will cause them to leave you be, because they start choking on the magically expanding moss.
** In level 5 of Thief 2, the intended method of beating the level is to listen in on Karras's conversation and learn where the safety deposit key is located. If you happen to find the key and make the wax mold first and then listen on the conversation, Garrett will say this:
--> '''Garrett:''' I wonder how I knew I was going to need this wax key press?
* [[DidYouJustPunchOutCthulhu Did You Just Rob Cthulhu]]? He did.
-->'''Garrett:''' I've never robbed a god before. It'll be a challenge.
** Also a more straightforward DidYouJustPunchOutCthulhu for the {{BigBad}}s of the first and third game. Garrett being a stealthy bastard, [[DidYouJustFlipOffCthulhu he achieves victory not by brute force, but through cunning and preparation.]]
* DifficultButAwesome: The gameplay of the series in general, particularly if you choose to play all three games in a StealthRun style as much as possible ([[PacifistRun to the extent of not even knocking out enemies even if you would have the opportunity]]). If you beat a tough mission on Expert level without getting caught and stealing all the loot or getting all the needed information/macguffins, you can congratulate yourself - you'll pretty much be ready to handle most stealth games in existence (at least the more flexible ones, without UselessUsefulStealth and FakeDifficulty).
** A more specific version being the bow and arrow. The awesome part is that it's Garrett's most useful and versatile tool. [[NoArcInArchery The difficult part is]] [[AvertedTrope compensating for the drop over long distances]] - and that different types of arrow have different flight paths.
* DifficultyLevels: Higher difficulty levels not only increase the amount of loot that must the gained but also restrict the use of deadly force. In ''Deadly Shadows'', it also affects how much hostile guards react to noises (which was used to discover that difficulty levels get reset when saving and reloading.)
* DisposableSexWorker and DisposableVagrant: In the second and third games; the nobility conform to the old standard of seeing those below their social class as servants or playthings, not people. Sheriff Truart specifically mentions prostitutes as the kind of people he can bring to Karras who "will not be missed by anyone of consequence". And the Hag sees those who fall to her as resources to extend her life and skins to use as disguises.
* DoubleCaper
* DroneOfDread: Used commonly throughout all three installments, in certain segments of the ambient/atmospheric music. Particularly in scary missions. Though it is also common in some bits of non-supernatural missions, in order to build tension.
* DungeonCrawling: The subterranean and outside-the-City missions in general. Sometimes in actual catacombs and tombs, sometimes in various caves and caverns. In a subversion, only some of them are actually haunted. This trope also applies literally, since this is a stealth game where you'll mostly be crawling around and/or skulking in the shadows.
* EarnYourHappyEnding: ''The Dark Project''. After going through some of the scariest and most intense scenes in first person game history, you finally have a moment to breathe [[http://www.youtube.com/watch?v=_AdhWsObqvk&NR=1 at the end]]. Until the SequelHook.
* ElaborateUndergroundBase: The [[IslandBase Markham's Isle complex]] in the mission "Precious Cargo".
* EldritchLocation
** In the first game, besides the Old Quarter and the Lost City, Constantine's mansion qualifies. The first few halls are quite conventional, but once you infiltrate it deeper, the weirdness starts, and it's quite unsettling.
** In the third game, the Shalebridge Cradle is this trope personified. It's implied that the building itself has its own malevolent consciousness.
* ElementalPowers: One of the unusual natural occurences in the world of the series is the spontaneous formation of crystals that represent the four elements, depending on location (e.g. water crystals form in ponds and rivers, fire crystals in lava or fires, etc.). These are then commonly utilized by various thief guilds or independent thieves, including Garrett : They serve as the ''[[AbnormalAmmo arrowheads]]'' for the various {{Trick Arrow}}s used in heists. For instance, water arrows can put out torches, gas arrows [[KnockOutGas knock out]] adversaries, moss arrows create moss carpets that deaden footsteps on louder surfaces. Funnily enough, the fire arrows in the game are not just simple arrows set alight, but ''fire crystal arrows'' that ''[[MadeOfExplodium explode]]'' when hitting something, making them the most powerful offensive arrows. Then there's the Hand Brotherhood, a group of oriental-esque mages that specialize in magic based on the four elements. You get to visit their elaborate compound in the mission "The Mage Towers" from ''Thief Gold''. And, appropriately enough, your elemental {{Trick Arrow}}s do come in handy in that mission as well.
* ElvesVersusDwarves: The rivalry between the Pagans and the Hammerites has elements of this, including TheMagicVersusTechnologyWar.
* EnemyChatter: Particularly memorable: the [[http://bearpits.ytmnd.com/ bear pits]] conversation in "Lord Bafford's Manor"; and a GenreSavvy guard asking a Mechanist how the cameras know to sound the alarm when they see a thief, but not when they see a guard. (His response? The Mechanists' version of the MST3KMantra, of course.)
* EnemyMine: [[spoiler:Garrett teams up briefly with the Hammerites and Pagans in the first and second game respectively (and has the option to team up with both of them, simultaneously, in the third game). He does it more out of necessity than sympathy.]]
* TheEndOfTheWorldAsWeKnowIt: The {{Big Bad}}s of the series love to wipe out civilization. Go figure.
** [[spoiler:Subverted in the case of Gamall. She just wants to live forever. The fact that the Keepers all got an eyeful of her true from, and thus need to be eliminated is ancillary.]]
* [[EverythingsDeaderWithZombies Everything's Worse With Zombies]]: One of the few bigger criticisms of the first game was the fact that it had too many levels populated by various undead creatures and monsters. Zombies were chiefly removed from ''The Metal Age'' along with burricks and most other monsters because players preferred to concentrate on, you know, pure thievery. The third game generally took the middle route, with mostly realistic missions interspersed by more supernatural and undead/monster-heavy ones.
* ExactWords: Sometimes the mission briefings will give details about the mission away. In Hard Mode, the game normally says "Don't kill anyone", but two missions have different goals which tease towards their content: [[spoiler:"Trace the Courier", which says "Don't kill any '''humans'''", has you entering the Maw and running into some of the Chaos Beasts, while "Precious Cargo" says "Don't kill any '''Mechanists'''" because you have to MercyKill one of Viktoria's agents in order to progress.]]
* ExplodingBarrels: They're red and marked with a flame logo. Averted in the third game: barrels marked like the first two games marked exploding barrels, don't explode.
* EveryDeviceIsASwissArmyKnife: Garrett's bow comes across as this, since the wide array of {{Trick Arrow}}s that it can fire makes it a very versatile weapon. [[SubvertedTrope Oddly enough]], given the [[StealthBasedGame nature of the gameplay]] and the types of arrows you'll usually be using the most, the bow is more often than not a tool, rather than an offensive weapon. The bow itself also has some [[AwesomeYetPractical funky accessories]], particularly an attachment with a simple targeting reticle made from iron. The arrows themselves and the blackjack and sword/dagger also have a great degree of multifunctionality.
* EyeScream: Garrett gets his eye plucked out by one of the bad guys during the first game. We later see a brief, detailed close-up of the shrivelled, bloody gap in his face.
** The third game [[spoiler: reintroduces Garrett to his missing eye, which talks to him and suggests that one day it may remove the other eye]].
* FakingTheDead: [[spoiler:Garrett does this in the third game in order to escape Shalebridge Cradle.]]
* FanNickname: When discussing the installments of the series, they are usualy referred to by acronyms of their secondary titles - i.e. "TDP", "TMA", "TDS".
* FantasyGunControl: The world of ''Thief'' has scientific advances such as electricity, steam engines, clockwork robots, surveillance devices and even ''stun grenades'' (flashbombs and gas grenades), but there are no gunpowder firearms to be seen (which amusingly contrasts the otherwise accurate [[TheLateMiddleAges Late Medieval-like]] setting). Even the City Watch and Mechanists are armed with swords, maces, bows, and crossbows at best.
** The cannons require gunpowder, and they can be seen on ships and, of course, the Children of Karras. The cannonballs also have fuses that are lit. And they act more like cluster grenades after landing on the ground and lying still for about a second or two.
* FamedInStory[=/=]ShroudedInMyth: By the third game, Garrett's name is pretty famous in the city as ''the'' pre-eminent thief, "rarely seen and never caught" -- you can listen in on snippets of gossip (both accurate and exaggerated) about his exploits, and other lower-caliber criminals bragging about being as good as him or out-and-out claiming to ''be'' him to bolster their own reputations.
** In the third game, there are even lesser thieves who pretend to be Garrett to get business. Garrett himself finds this amusing.
* FateWorseThanDeath: The Masked Servants. It's unknown precisely what Karras does to make them compliant to orders, but the fact that they plead for death as an idle dialogue and thank you if you kill them will send shivers up your spine.
** In one spot you can overhear two normal servants talking about one, and one of them mentions it "crying like a lost soul".
** In one mission, you can eavesdrop on a "conversation" between a Mechanist and servant. The servant repeatedly asks to be killed, but the Mechanist continues on as if he doesn't hear it.
* FertileBlood: The intro for the first mission dealing with Pagans in ''Deadly Shadows'' shows a Pagan cutting his palm in order to "water" a plant, which then grows exponentially faster than normal.
* FilmNoir[=/=]CityNoir[=/=]FantasticNoir
* FirstPersonGhost: Played straight in the first two games, averted in ''Deadly Shadows''.
* FirstPersonSmartass: It's a first person game and Garrett is a smartass. His opening narration for each mission especially falls into this a lot.
* FishPeople: The Kurshok from the third game. Surprisingly, they're not in allegiance with the Pagans like most of the other non-human races - it's subtly hinted that [[spoiler:the Trickster cast them below the earth.]]
* FiveFingerDiscount: As a [[StreetUrchin child]], Garrett came to the attention of the Keepers when he tried to pickpocket one on the street, because "it's not an easy thing to see a Keeper, especially one who does not wish to be seen." In the game, there are frequent opportunities to filch bags of gold, keys, potions, and arrows from the unsuspecting, with a "pockets picked" counter on the score page after the mission.
* {{Foreshadowing}}: The intro cutscene of each game drops hints about the main plot and Garrett's enemies. The third one's is more ambiguous than those of the first two games, but it features a major ContinuityNod towards them (with two brief rapid montages referencing their events).
* FriendlyEnemy: Garrett and [[spoiler:Viktoria]] in ''The Metal Age''. They plot devious things together. It's simultaneously both disturbing and a little cute.
* GainaxEnding: The end of ''Thief II''.
-->'''Garrett''': All this...it was written?
-->'''Artemus''': All.
-->'''Garrett''': [[spoiler:Viktoria's death? And Karras?]] Was it written? In your books?
-->'''Artemus''': All is, as it was written.
-->'''Garrett''': And there's more?
-->'''Artemus''': Yes.
-->'''Garrett''': Show me.
* GameMod: Several. Most notable is ''Shadows of the Metal Age'', a full-length, [[FanSequel fan-made]] [[ExpansionPack expansion]] for ''Thief II'', with a new main character, weapons and items, and a story of {{Revenge}} and manipulation.
* GeniusLoci: As Garrett describes the Cradle:
-->'''Garrett:''' This feels like a house with bad dreams.
** Not a house that ''gives'' you bad dreams, but a house that, itself, dreams. This invites the question of what occurs when you wake it up.
* GenreBusting[=/=]GenrePopularizer: Game critics had a hard time pigeon-holing the first ''Thief'' into any recognisable genre when it came out in November 1998. It played from a first person perspective, yet wasn't an {{FPS}} ([[AvertedTrope nor did it reward killing]] [[LudicrousGibs everything in sight]]). It featured lots of various puzzles, yet wasn't an AdventureGame. It had vaguely {{RPG}} elements, yet wasn't an {{RPG}} at all. Along with ''VideoGame/MetalGearSolid'', ''Thief'' practically [[TropeMaker defined]] the [[StealthBasedGame stealth game]] genre as we know it today.
* GentlemanSnarker: First Keeper Orland and some of the other Keepers, to varying degrees.
* GentlemanThief: Garrett is the ultimate subversion of this trope. He's a [[HiddenDepths gentleman]] [[JerkWithAHeartOfGold on the inside]], [[JerkassFacade with a rough and snarky outward shell]].
* GhostShip: The "Abysmal Gale" from ''Deadly Shadows'', owned and commanded by the wealthy naval merchant Robert Moira. It sailed back into harbour, but the crew didn't come out or attempt any communication with the outside world. Since the ship becomes relevant to the main plot, [[FetchQuest Garrett has to sneak aboard, search for the ship's log and investigate what happened to Moira and his sailors]].
* GiantSpider: These appear occasionally in the first game and more rarely and with less variety in the second one. Even the "[[{{Understatement}} small]]" [[http://thief.wikia.com/wiki/Yellow_Spider yellowy spider]] is as big as your ''foot''. They usually attack by jumping and biting. Sometimes they spit.
* GoodIsNotNice: Garrett usually acts ignorant or dismissive of the evils threatening his world, but his JerkassFacade hides a character with strict personal standards, who dislikes seeing pain inflicted upon those who were already given a bad hand by life.
* GrapplingHookPistol: The (slightly magical) rope arrows in the first and second game are essentially a medieval version of this. They can stick into any wooden or earthy materials and provide new routes to otherwise inaccessible areas. The vine arrows from the second game are a full-blown magic version of the ordinary ones and can also stick into surfaces with metal grating. [[spoiler:Garrett obtains them after teaming up with the Pagans.]]
* GreyAndGreyMorality: ''Everyone'' in the setting, including the [[OrderVersusChaos forever-locked-in-conflict]] [[NotSoDifferent Hammerites and Pagans]]. Each faction and character have their moments of nobleness and humanity, as well as KickTheDog and WhatTheHellHero ones. The only apparent exception to this trope would be the major villains, and even then, they may simply have [[DrunkWithPower taken their faction's dogma too far]] or have [[WellIntentionedExtremist sympathetic motives buried somewhere deep in the past]].
* GrayEyes ''and'' GreenEyes: Garrett for both tropes. His eyes are naturally gray (befitting a snarky, noir-esque loner) and [[spoiler: his mechanical eye is bright green, which also matches right up with his sneaky, untrustworthy nature, what with him being a professional criminal and all.]]
* TheGuardsMustBeCrazy:
--> ''It was probably just the wind...''
** Also, it's one thing to go after a Noisemaker arrow; another is to pretend the freaky crystal lying on the floor under a doused lamp is invisible.
* HannibalLecture: The villains of the series, mostly towards Garrett. [[ShutUpHannibal He doesn't give a damn.]] But they usually don't know of his exact location when he's hidden, so [[FilibusterFreefall they just keep on ranting]], hoping to unsettle him... In a rare aversion, the BigBad of the first game managed to briefly "lecture" Garrett face-to-face.
* HarmonyVersusDiscipline: Played very straight with the Pagans and the Order of the Hammer, respectively.
* HeroesPreferSwords: Played straight in the first two games. Averted in ''Deadly Shadows'', however, as there Garrett trades his longsword for a more concealable dagger.
** The Dark Engine (used in TDP and TMA) was first developed for an Arthurian-themed game which never saw the light of day because the swordplay was far too complex, so they gave the complex swordplay to a character who wasn't meant to be good at sword fighting. They made ''Thief'' and the rest is history. ''Thief: Deadly Shadows'' used the [[GameEngine Unreal Engine]], so they finally replaced the sword.
* HeroicSacrifice: [[spoiler:Viktoria explodes herself into a torrent of trees and plant matter to set up Soul Forge for Garrett to wipe it out with the rust gas.]]
** Also doubles as DyingMomentOfAwesome.
* HighlyVisibleNinja: [[spoiler: The Keeper Assassins from the third game were criticized for their unstealthiness while dealing with other random [=NPCs=]. ]]
* HufflepuffHouse: Various readables and some conversations mention the outlying city states of Blackbrook, Bohn and Cyric and The City's relations to them. [[LawOfConservationOfDetail We never ge to see them though.]]
* HumansAreMorons: "Manfool", as the lingo of the Pagans goes.
* HyperactiveMetabolism: Food is edible and heals in the first two games, particularly the second. All games also have [[HealThyself healing potions]].
* IHaveManyNames: The Trickster. Just a few are "The Woodsie Lord", "The Jacksberry", "The Harvester", "The Gillsweet", and of course, [[spoiler:Constantine.]]
* ImplausibleFencingPowers: Massively averted all the way by all normal sword-wielders. [[spoiler:The Hammer Haunts and other monsters don't count.]] Particularly important in Garrett's case, since his creators made him a deliberately average/weak swordsman to prove a point - he's a thief, not a warrior. The sword (and later dagger) is for self-defence only and ''always'' a last resort (if you want to undergo the tiring process of fighting off a guard or creature instead of just reloading your save and not alerting them the second time you sneak across that location).
* IndustrialGhetto: Glimpses of this are caught throughout several of the city districts, particularly in ''The Metal Age''. [[GameMod Fan missions]] tend to portray this aspect of The City frequently.
* TheInfiltration: The ''Dark Project'' mission "Undercover".
* InkSuitActor: Viktoria's face is rather similar to that of [[http://www.mobygames.com/images/portraits/large/1192562205-00.jpg her voice actress]], isn't it?
* InsecurityCamera: The Mechanist surveillance cameras from ''The Metal Age'' can be shut down easily by finding their fuse boxes and pulling a lever or two. However, if there's one central generator room for all of them, then it's usually well guarded or pretty hard to sneak into. An alternative, much noisier way of disabling the cameras, is to simply blow the cameras up with your fire arrows or by placing an explosive mine under them and triggering it with your broadhead arrows.
** The Wieldstrom Museum's security systems from ''Deadly Shadows'' can also be disabled this way, though only for a minute or two. Furthermore, the Tesla-coil-like electrical fence protecting the two most valuable exhibits can be disabled [[spoiler:by [[AwesomeYetPractical shooting a water arrow into one of the coils]], shutting it down for about 5-7 seconds]] - enough time to grab the loot and run back for cover to the nearest dark corner.
* InstantSedation: Played straight by the gas arrows and gas bombs, but subverted by the gas mines, which need to be deployed first in one set spot and then triggered (whether by an NPC or the player with the help of an arrow).
* InterchangeableAntimatterKeys: Averted. While some keys do open multiple doors, they don't open ''every'' door, and often you'll have to go hunting to find the ''right'' key. They also stay with you, and you can even end up with multiple copies of the same key since several guards will have them in a single stage.
* InTheHood: Garrett and most of the Keepers.
* InvisibleToNormals[=/=]JediMindTrick: The Keepers, thanks to their mastery of stealth and espionage, [[spoiler: and in the case of their buildings, their unique [[InstantRunes Glyph Magic]].]]
* IronicEcho: When Garrett tried to pickpocket Artemus in his youth, Artemus caught him and told him he had talent for being able to see a Keeper, especially when he doesn't want to be seen. [[spoiler:At the end of the third game, when a little girl tries to pickpocket Garrett, he says the same thing and smiles at the memory.]]
* IronicName: The Mechanists named their submarine Cetus Amicus, which is Latin for "friendly whale".
* {{Irony}}: Constantine awards Garrett a magic sword for a successful mission - however, players who are experts at the game ''will never use it''.
* IslandBase: The Markham's Isle complex in "Precious Cargo" (which is also an ElaborateUndergroundBase).
* [[IsThisThingOn Is This Functioning?]]: Karras, in one of his more humorous moments, asks this when he records his messages for his party.
* [[ItsProbablyNothing It's Probably Just Rats]]: No, guards. It is a thief about to blackjack you.
* JerkWithAHeartOfGold[=/=]LoveableRogue: Garrett.
* KillItWithWater: The proper way to deal with Fire Elementals, and the Mechanist robots in the second game (that is, other than heavy firepower).
* KnightTemplar: The Mechanists in the second game, and the Hammerites in the first to a degree.
* KnockoutGas: Shooting a mook with a Gas Arrow will knock him out even if he's fully aware of your presence (and thus would only get annoyed by the Blackjack). Shooting the ground has an area effect, knocking out everyone within a meter or so. Gas bombs and gas mines have an area effect as well, though gas mines need to be triggered first to deploy gas.
* LandOfOneCity: You visit the outskirts, but that's as close as you get to seeing if that City has limits.
* LargeHam: The voicework for the shopkeepers in Deadly Shadows is either good or just okay, but all of them are appropriate-sounding. Except for one. [[MostAnnoyingSound You probably know]] ''[[MostAnnoyingSound exactly]]'' [[MostAnnoyingSound which one.]]
* LoadsAndLoadsOfCharacters: Though most of them are just a supporting one-shot cast.
* LoonyFan: The fence Marla Madison towards Garrett in ''Deadly Shadows''.
* LostTechnology: The cultivators in the second game.
* LowFantasy: Definitely. Some omni-present examples of this trope in the series' setting :
** Humans are the dominant species and there are no Tolkien-esque races.
** The overall moral alignment of characters often gets very fuzzy.
** Everything in the setting has a down-to-earth feel to it.
** There's no explicit MedievalStasis.
** Magic - whether good or bad - is not seen as something magnificent and cosmic.
** The fight between good and evil is a more internal than physical affair.
** Each character and faction has an agenda and few can be trusted.
** Your protagonist is an AntiHero and GreyAndGrayMorality abounds.
* LightIsNotGood: Of the literal variety - brightly lit spaces and loud floors are Garrett's greatest enemies (as far as thieving goes). Using water arrows to douse out torches and gaslamps and moss arrows to muffle otherwise loud surfaces (like metal floors) is one of the basic parts of gameplay in all three games. [[StealthRun Still, nearly all levels can be passed without using a single piece of thieving gear.]]
* LimitedSoundEffects: Averted big time. Nearly every type of surface imaginable has an expansive and context-sensitive set of sound effects. Listening to your surroundings is even part of the gameplay (you can guess the distance between you and any NPC and also the direction from which the sound is coming). Thief was probably the first game to use the concept of sound FX being more than just a background decoration to its full degree.
* MadScientist: [[spoiler:Karras, the founder and leader of the Mechanists.]] He seems to have a FreudianExcuse, but yikes.
* TheMagicGoesAway: In the ''Deadly Shadows'' finale, [[spoiler:Garrett activates the "Final Glyph", which causes all other glyphs to lose their power. This puts an end to Gamall's rampage, as well as exposing the Keepers to the world, and burning a non-magical "key" symbol into the back of Garrett's hand. Loss of the glyphs leaves the fate of the Keepers uncertain. Loss of the Glyphs also seems to indicate that the stealth powers of the Keepers are non-magical, as Garrett retains them and is surprised when a talented young girl is still able to see him, much as he did in the first game with Artemus.]]
* {{Magitech}}: Some of the technology in the game's universe seems to be of this variety. Sometimes, it's clearly related to the LostTechnology trope.
* TheMasquerade: The Keepers. There is ''no'' mysterious, conspiratorial group with near-mystical stealth skills in hoods watching and nudging events from the shadows, and if you disagree, you might receive a visit from a mysterious assassin with near-mystical stealth skills in a hood to shut you up.
* MasterOfUnlocking: Garrett. The start of the [[spoiler:''Assassins'']] mission from the first game even shows Garrett visiting one of the City's fences and buying a new pair of trusty lockpicks [[RuleOfFunny (that come packed with a short manual for newbie thieves)]].
* MeaningfulName: [[spoiler:The word "Gamall" is Scandinavian (and Tolkien-talk) for "old".]]
* MeleeATrois:
** The climax of the third and final game, ''Thief: Deadly Shadows'', [[spoiler:is a massive melee throughout the city streets between the City Watch, Hammerites, Pagans, and the BigBad's animated statues]]. The more factions that are friendly or at least neutral towards Garrett, the easier it is to make it through alive.
** The first game has the potential for this in any level where multiple types of [[{{AI}} AIs]] are around, e.g. "The Haunted Cathedral", "The Lost City". Zombies will attack anything alive, for example, not just the player; fire elementals will attack at least some types of living [[{{AI}} AIs]]; and so on.
* [[DeletedScene Missing Scene]]: For some reason, PC versions of Thief II circulated after its original release (for example, a budget-priced reissue several years later) omit all the cutscenes, specifically those in which Garrett is briefed about the next mission. As such, the player often starts a mission with only basic instructions to follow and no context.
* MistakenForGranite: In the late levels of the third game.
* NamesToRunAwayFromReallyFast:
** [[spoiler:The "''necrotic mutox''", a.k.a. "rust gas" - a SteamPunk biochemical weapon of mass destruction created by the Mechanists. It wipes out biological matter. Take three guesses on what they wanted to use it for.]]
** Subverted with the ''Cetus Amicus'', which means "Friendly Whale". Keep in mind, the thing is a deadly submarine.
* NaturalWeapon: The four elemental {{Trick Arrow}}s in all three games. In ''The Metal Age'', there is also the Vine Arrow (an [[OrganicTechnology organic]] variation of the rope arrows) and the [[RidiculouslyCuteCritter Frogbeast]] [[TrickBomb Egg]].
* NatureSpirit: [[spoiler:Viktoria.]] [[GreenSkinnedSpaceBabe Green Skinned Wood Nymph]], natch.
* NiceJobBreakingItHero: Unsealing SealedEvilInACan is bad. Who knew?
* NinjaPirateZombieRobot: Applies to certain characters and factions.
** The Hammerites are basically a church of {{Steampunk}} Medieval [[CrystalDragonJesus Ersatz-Catholic]] Crusaders with a fetish for hammer-related iconography.
** The Mechanists are {{Steampunk}} ChurchMilitant [[CrystalDragonJesus Fantasy Early Protestants]] led by a GadgeteerGenius, showing even more pronounced deification of industry, technology and progress.
** The Keepers are a cowl-clad and monastically organized [[AncientTradition secret order]] of [[TheStoic stoic]] scholars who ''can outstealth a ninja'', use a peculiar kind of magic and try to [[TheWatcher observe]] and protect The City and its society [[TheWorldIsNotReady from behind the scenes]].
* NoArcInArchery: Mostly averted. Nearly all arrows arc. The broadhead, rope, water and moss arrows follow the laws of physics, while the elemental arrows of Air (sleeping gas) and Fire (rocket launcher stand-in) fly straight and fast. Since the elemental air present in the arrowheads could probably be considered to have its own personal updraft... and hot air rises.
* NoGearLevel:
** In ''The Dark Project'', Garrett has his gear taken away after [[spoiler:the BigBad plucks his eye out and leaves him for dead]]. Garrett starts the level with no gear at all, but if you have the presence of mind to search the room you start in you'll easily find his bow and some other useful items.
** In ''Deadly Shadows'', the trope can be played straight if the City Guards capture you while you're roaming the streets in plain sight. They will toss Garrett into one of the local prisons, where he later wakes up in a locked cell, weaponless. Then you have to figure out how to escape.
** This trope is also popular in fan-made missions. The difficulty depends on whether you've been depending on your weapons to get by, or if you've properly honed your stealth skills.
* NoOSHACompliance: According to the briefing before the "Stopping Time" mission, more people have been killed by the gears of the city clocktower than the blade of the City's guillotine.
* NothingIsScarier[=/=]HellIsThatNoise: Many of the creepiest levels use this to great effect [[spoiler:,the first half of the Cradle mission being a textbook example]]. Granted, there may be some real threat lurking in the shadows or eerie spaces, too. Maybe.
* TheObiWan[=/=]CoolOldGuy: Artemus, the Keeper Elder who brought Garrett into the order and served the role of his teacher and father-like figure. Apparently the only Keeper who can still top Garrett in stealth. Overlaps a little with MrExposition in nearly every cutscene or location he appears in.
* OhCrap: This isn't an expression we see Garrett use very often, but it snuck its way in, most memorably in a ''The Dark Project'' cutscene [[spoiler:when Viktoria takes his eye]] and in ''Deadly Shadows'' [[spoiler:when he spies Gamall animating statues in the Keeper compound.]] Just about every Keeper got this in ''Deadly Shadows'' during [[spoiler: Gamall's advancement ceremony when she revealed herself as the Hag]].
* OptionalStealth: Theoretically, you can ditch stealth and kill everyone in sight, but it is a lot more dangerous and resource-consuming, even on lower difficulty levels. However, there are some missions where killing or even simply getting spotted results in a GameOver. The hardest difficulty settings pretty much force the player to play as stealthily as possible.
* OrderVersusChaos: The struggle between the orderly Hammerites and chaotic Pagans is a major plot point in all three games. Notably, the third main faction - the Keepers - is meant to act as a [[TrueNeutral balancing agent]] and [[TheWatcher watchdog]] of the duo of rival ideologies. Fittingly enough, the Keepers are not known to the general public and are extremely secretive about who they are and what they do ([[InvisibleToNormals their glyph magic certainly helps with this]]).
* OrphanageOfFear: Shalebridge Cradle used to be an insane asylum and an orphanage [[spoiler:at the same time. The children and patients were supposed to be kept separate; it didn't always hold true]].
* OurDragonsAreDifferent: Burricks - wingless reptiles with the size of a pony and the outward appearance of a chubby theropod dinosaur - are apparently the closest thing to a dragon in the Thiefverse. Expectable in such a down-to-earth LowFantasy setting. Burricks aren't actually ferocious (being herbivores), but they can still be dangerous. No, they don't breathe fire - instead, they burp cloud after cloud of some sort of highly concentrated fumes created in their digestive system. The fumes are corrosive and you'll suffocate in them almost immediately. It's implied they have slightly explosive properties - Garrett makes a snappy remark in the second game about how ''"infiltrating Shoalsgate is like looking down a burrick's throat with a lit match"''. Burricks appear up-close-and-personal in several levels of the first game and in the form of hunting trophies and occasional references in the second and third game.
* OurGhostsAreDifferent[=/=]OurZombiesAreDifferent: Where to begin ? [[spoiler:Hammer Haunts, Fire Shadows, Shalebridge Cradle inmates (a.k.a. "Puppets") and [[TheBlank shadowy spirits of its former staff members]]... Then there are literal ghosts, both friendly and malicious, called Apparitions. Only the regular type of zombies has generic zombie appearance and behaviour throughout the whole series.]]
* OxygenMeter: Appears in the lower right corner whenever you are swimming underwater in the first two games. Since the third game has no swimming mechanic, the meter doesn't make an appearance in that one.
* PardonMyKlingon[=/=]UnusualEuphemism: Taffer, to taff, taffing taff... The most common and versatile curseword in the series' universe. The various guards are its most prominent users. "Taffin' cripes, I knew I smelt trouble! Where are you, you taffer? Aah, you're taffing me. Who's gonna clean up all this taff?" The word "taffer" seems to be a general term for a criminal, low-life or annoying person. [[ClusterFBomb And some other things.]] Other cursewords uttered by various characters are fairly standard or slightly archaic. A cut piece of dialogue in ''The Dark Project'' alludes to the notion that "taffer" is yet another named for [[IHaveManyNames The Trickster]].
* PerpetualPoverty: Uh, Garrett? Over the course of three games you've stolen thousands and thousands of gold. ''Why'' do you still have trouble paying the rent? Are you throwing it all away between each caper? Ale and whores? Seriously, hire an accountant or something, man.
** [[StatusQuoIsGod His landlord is even thougher than the Hammers, apparently]].
* PhantomThief[=/=]ImpossibleThief: Garrett, of course. While he steals for a living, he also turned to it to get out from under the self-imposed (and self-righteous) restrictions of the nigh-invisible Keepers. Many of his capers are clearly done as ''ars gratia artis''. In one first-game mission Garrett decides that the best revenge against a crimelord's assassination attempt is, instead of killing him, to sneak in and remove every valuable object from said crimelord's house. Granted, you also have the option of doing that ''and'' (depending on difficulty level) killing him.
** Also subverted in that Garrett's single most frequent recurring complaint is 'I have to do this job because the rent is due'.
** Garrett has robbed from castles, mansions, patrician houses, taverns, shops, museums, city guard stations, abandoned haunted parts of the city, ancient ruins, ''[[EldritchLocation places defying the very laws of physics]]'' [[ArsonMurderAndJaywalking and the office of his landlord]]. Hell, he's even managed to snatch a few trinkets from the heart of the well-guarded and nearly impenetrable Keeper Compound. He's busted out the imprisoned fiancee of his old pal from a heavily guarded manor. He routinely stops by to rob banks and establishments clean, while en route to fullfill a more crucial mission objective.
** Of course, all of his incredible exploits heavily depend on the skill and patience of the player. There are really few things as satisfying as being able to sneak through an entire mission stealthily, grabbing all the visible and hidden loot, and not getting seen or otherwise detected by anyone.
* PlotCoupons: The first game has Garrett find the four keys to a locked cathedral.
* {{Pluralses}}: In the first game, the Trickster talks this way. The Pagans and their allies also often incorporate it into their YouNoTakeCandle style of speech.
* PoweredByAForsakenChild: Servants in ''The Metal Age''. [[spoiler:In ''Deadly Shadows'', [[BigBad Gamall]]'s disguise is an orphan's stolen body. How do you reveal her? By ''giving it back''.]]
* {{Precursors}}: The, uh, [[ExactlyWhatItSaysOnTheTin Precursors]].
* RedHerring: In ''Deadly Shadows'', Garrett is led to believe that [[spoiler:First Keeper Orland]] is the traitor when [[spoiler:the ruins of the collapsed city clocktower point to his office]].
* RefusalOfTheCall: Garrett does not want to be a Keeper or to be involved in their plots. [[TheCallKnowsWhereYouLive This doesn't stop The Keepers from seeking Garrett out.]]
-->'''Artemus:''' You cannot run from life as you did from us, Garrett. Life has a way of finding you, no matter how artistic a sneak you are.
-->'''Garrett:''' Tell my ''friends'' that I don't need their secret book, or their glyph warnings, or their messengers. Tell them I'm through. Tell them it's
-->'''Artemus:''' ''(after Garrett departs)'' I will tell them this: [[TheCallKnowsWhereYouLive Nothing has changed. All is as written.]] [[spoiler:The Trickster is dead.]] [[SequelHook Beware the dawn of the Metal Age.]]
** However, The ending of ''Thief II : The Metal Age'' was a subversion.
* RemixedLevel: The Lost City. Appears in two different versions in the first and second game.
* RenegadeSplinterFaction: The Mechanists became one to the Hammerites.
* {{Retirony}}: A variation - Garrett expresses his intention to retire after stealing the Eye from the cathedral in the first game, before [[spoiler:the Trickster betrays him and leaves him for dead.]]
* RetroUniverse[=/=]SchizoTech: Seriously. [[RuleOfCool A hodge-podge of medieval and Victorian society, architecture and tech]]. Lots of gears and ticking valves.
* RobbingTheDead: Garrett is not above stooping to this if it's necessary. He prefers robbing the living, though, because the undead that tend to inhabit crypts and graveyards are generally a lot more dangerous.
* RuinsForRuinsSake: Soundly averted. Many of the ancient ruins visited in the series will give you an almost dizzying sense of their long history, to the point where merely walking around them becomes [[NothingIsScarier genuinely unnerving]].
* RuleOfSymbolism: Quite a lot, especially in the cutscenes and the more dramatic moments.
* SealedEvilInACan: [[spoiler:The Eye in the first game]].
* SequelHook: "[[spoiler: The Trickster is dead.]] Beware the dawn of the Metal Age."
* SetAMookToKillAMook: Perfectly doable in all three games, as long as you lure groups of {{NPC}} that are enemies with each other into a single location. While your noisemaker arrows are usually meant to be used as a decoy to ward off attention from you, you can use them to lure two enemy groups together to a single spot, where they'll promptly start fighting each other.
* ShipTease: Plenty of it between Garrett and Viktoria in ''Thief II''.
* ShoutOut: A number of {{Easter Egg}}s and well-hidden popcultural references.
** While Garrett is visiting the Bonehoard (A large underground cemetery) in the first game, he does a quip that goes like this: "''Time to... raid some tombs.''" (Creator/EidosInteractive was the publisher of both the ''Thief'' and ''Franchise/TombRaider'' series.)
** The "Lost City" level in the first game has a CthulhuMythos referemce : It contains a statue that looks very like Cthulhu, and reference to a god "N'lahotep". It's strongly hinted that angering these gods is what caused the city to be buried under lava.
** A deadly fireball-type projectile is called a "[[VideoGame/{{Wizardry}} Tiltowait]]". But you will never find out unless you try the LevelEditor.
** A rather famous EasterEgg is a [[RuleOfFunny basketball court]] [[http://www.youtube.com/watch?v=irIprL7YtF4 hidden in the training level]] of the first game. [[spoiler:It is only accessible if you select Expert difficulty.]] The place doubles as a DevelopersRoom thanks to a scroll containing the dev team's quotes, compiled during the development of the project. A basketball court was a common easter egg in games developed by Creator/LookingGlassStudios. For instance, it [[http://www.youtube.com/watch?v=DBf1XrLgq20 also appeared]] in ''VideoGame/SystemShock'' and ''VideoGame/SystemShock 2''.
** [[http://thief.wikia.com/wiki/Easter_Eggs Here's a pretty detailed (though not definite) list of the various hidden references.]] (Of course, take caution while reading - there might be minor spoilers about the structure and content of the missions.)
** The leader of the Mechanists is named [[Film/TheExorcist Father Karras]].
* SinisterMinister: [[spoiler:The Mechanist leader, Father Karras.]]
* SlidingScaleOfShinyVersusGritty: The visuals and atmosphere of the series literally ''bathe'' in grittiness - and unlike in many other games, it feels very believable, with only minor exaggerated stylisation. Of course, the shiniest places you see belong to either the City's mostly corrupt nobility or the [[CorruptChurch Mechanist Order]]. Not even the Hammerites and Keepers have such lavishly decorated and polished interiors in their buildings.
* SlobsVersusSnobs: The two sets of guards arguing in Thief II's ''Life of the Party'', Lady Van Vernon's guards are far better spoken, coming up with some truly classy insults.
* SoftWater
* SpiderDrone: The second game has some.
* SpiritAdvisor: Brother Murus [[spoiler:sends Garrett on multiple [[FetchQuest Fetch Quests]] to help him resolve his UnfinishedBusiness.]]
* StalkingMission: Unsurprising in a stealth game. They're actually pretty entertaining. [[spoiler:Some examples include The "Assasins" mission in the first game, the "Trace the Courier" mission in the second one and (partly) the Forbidden Library of the Keepers in the third one (after Garrett teams up with them once again).]]
* StalkerWithACrush: [[spoiler:Possibly Father Karras. Just listen to his endgame rambling at Garrett. "I'd have had thee under my control, else dead! Indeed, I'd have had both..." What the hell's he on about? Well, consider those masks, and then twitch!]] Garrett, amusingly, shrugs off hearing this recorded Yandere-fest. [[ShutUpHannibal "Yeah, keep talkin'..."]]
* StealthBasedGame: The series is effectively impossible to complete without either stealth or cheating. The main character simply isn't formidable enough to actually fight all the guards one at a time, let alone in groups, and in ''Thief 2'' there was at least one mission where remaining undetected was a required victory condition. Although lone guards are easy to dispatch if you could get a clear shot at their back while they were unaware of your presence, even then, some missions stipulate that you cannot disable any guards or civilians.
** It should be noted that circle-strafing and having lots of room to back up can help take out several guards at once. Most die after 2 or 3 overhead swings. The trick is just making sure they don't hit you.
* StealthHiBye: Garrett loves these. He does this to half the people he meets in the third game of the trilogy, including the Big Bad. His ''mentor'' manages to pull the same over on him once, amusingly.
* StealthPun: In ''Deadly Shadows'', you have to break into a clocktower operated by the Hammerites and sabotage the mechanism, causing the clock to stop. In other words, you have to [[MCHammer stop hammer time]].
* {{Steampunk}}: Or maybe [[DarkerAndEdgier Steam Gothic]]. Styles of dress and architecture are mostly late medieval, but there are electric lights on the street, Garrett gains [[ElectronicEyes a mechanical eye]], and gauges with no discernible purpose are everywhere. In the second game, there are even clockwork surveillance cameras and steam-powered robots. And those... ''servants''. Given the quasi-medievalness of the setting and the abundance of ever-present cogs and gears, it qualifies nicely as ClockPunk too.
* TheStoic: The Keepers certainly fit this kind of characterization, with their training and dedication to their ideology of balance making them avoid overly emotional reactions in their behaviour.
** Garrett himself is always calm and collected, even in [[spoiler:The Cradle]]. He will only occasionally express surprise, but he's only been scared shitless [[EyeScream once]]. The first time he ever smiles or even resembles being ''happy'' is at the very end of ''Deadly Shadows''.
* StrangeBedfellows: The second game has Garrett team up with the survivors of the group he defeated in the first.
** Late in the first game, he teams up with the Hammerites against a common enemy, an 'eye for an eye', if you will. Fittingly enough, the level in which the event takes place is called ''Strange Bedfellows''.
** In ''Deadly Shadows'', Garrett can team-up with these groups despite his history in targeting both of them and [[spoiler:killing the Pagans' god while he was trying to destroy the City they hate]]. Hell, it happens right after he's robbed both of them of some pretty valuable loot. It's possible they've realised he's a dangerous enemy to have.
* StupidityIsTheOnlyOption: The entire plot of the first game is driven by this. What ''idiot'' would possibly think that unsealing the ancient Hammerite Cathedral and freeing the Eye from its confinement would be a good idea, after the Eye ''talks to him in his head'' and visibly manifests its obvious evil on several occasions? For that matter, what idiot would think that Constantine had any intention of actually paying him that ridiculously oversized a fee for delivering the Eye, when he could simply mug Garrett and take it from him? Garrett didn't even get half the money up front. Apparently his streetwise instincts and common sense ''completely'' evaporate if you wave a bag of gold under his nose... which is in character for Garrett, at least.
** This is especially true considering the cathedral is in a part of the City that was walled off. Garrett's tone in describing the abandoned part of city seemed fairly skeptical of the actual danger. If the Hammerites were comfortable with leaving such an important artifact in a sealed cathedral in a ''sealed'' part of the City, it's fairly safe to assume the Hammers know something Garrett doesn't.
** Constantine did pay Garrett with his magic sword, and kept stroking Garrett's ego while challenging him at the same time.
* SuperDrowningSkills: In the first two games Garrett can swim, but in the third one he drowns instantly upon contact with nose-deep water.
** In the third game, guards take pratfalls on oil slicks, and it's [[CrowningMomentOfFunny even more funny]] when they slip right off a dock. Thanks to their Super Drowning Skills, it's a useful tactic, too.
* TalkingToHimself: You'd never know it from just playing, but Garrett, Karras, Raoul the beggar and "Benny" the comedic guard are all voiced by Stephen Russell. This happens a lot for many other characters, too.
** Done in a slightly more in-universe sense for the Children of Karras, the robots whose voices are simply Karras' voice recorded.
* TechnicalPacifist: Garrett, surprisingly enough. He's a thief, not a murderer. In the first two games, the medium difficulty level consistently forbids killing unarmed civilians, while the hardest difficulty does not allow you to kill any humans.
* ThankTheMaker: The Mechanist robots ''reeeally love this trope''. "Praise Karras", "All should hear the words of Karras, the words of Karras...", etc. Needless to say, [[MostAnnoyingSound it can get annoying]]. A full list of the phrases can be seen [[http://thief.wikia.com/wiki/T2_Sound_Folder:_Robots here]]. This trope is [[PlayingWithATrope slightly played with]] though - [[TalkingToHimself every robot uses a voice track recorded by Karras himself.]] It can become creepy hearing him speak from all of their mouths, even after you work out their limited speech patterns.
* ThievesGuild: Garrett's not interested in sharing his profits. The local guild bosses are less than pleased. One baron gives him trouble and giving it right ''back'' is the object of a mission in the first game. There's also a mission in Thief Gold that requires you to directly infiltrate the Downwind Thieves Guild, and steal something that the guild's bosses are arguing about.
* ThoseTwoBadGuys: See VitriolicBestBuds below. There are two guards in every game who change employers often, and for some reason anyone who hires them soon gets a visit from Garrett. And they ''still'' [[GenreBlindness haven't learned not to talk loudly about where the keys are hidden and the secret doors are...]]
* TitleDrop: Of course the main title gets a lot of use, but the subtitles of each game each get only a single mention. In the first game [[spoiler:Constantine]] in one written journal calls his plan his "dark project". The second game never uses the words "metal age", but those are the last words spoken in the ending to the first game. In the third game, a Keeper prophecy talks of "deadly shadows" rising.
* TooAwesomeToUse: Averted by BagOfSpilling: Not only can't you keep items you don't use, you can't even keep the extra cash if you don't buy them.
* TooDumbToLive: In the third game, you can listen to two nobles talking about how they found the secret tunnel two thieves used to try to rob the museum, and plan to use it to break in for a lark. Said nobles seem to be forgetting that the reason the thieves failed was because the museum has ''lethal'' security precautions in place. But it would be such fun!
* TrickArrow: Gas arrows, moss arrows, explosive fire arrows, distracting noise arrows and the ever-handy water arrows. [[SwissArmyWeapon They're versatile and can be used for a number of very different tasks]] (e.g. water arrows can douse torches and gas lamps, but also [[ReviveKillsZombie kill undead creatures if filled with holy water]], etc.).
* TrickBomb: [[BlindedByTheLight Flashbombs and flashmines]], [[StuffBlowingUp explosive mines]], [[KnockOutGas gasbombs, gasmines]] and even [[NaturalWeapon Frogbeast]] [[LethalJokeItem Eggs]]. Holy Water Flasks and Oil Flasks from the third game also count, though they are of the non-exploding variety of bomb-like gadgets. Naturally, since this is a stealth game series, you'll mostly be using (and finding/purchasing) the non-lethal knockout bombs, since they also make the least ruckus when deployed.
* {{Troperiffic}}: Seriously, just look at this page. Deconstructions are like that.
* TurnedAgainstTheirMasters: How Garrett [[spoiler:beats Karras]] in ''Thief II: The Metal Age''.
* UndergroundLevel: ''The Dark Project'': "Escape from Cragscleft Prison", "Down in the Bonehoard", "Thieves' Guild", "The Lost City", part of "Song of the Caverns", "Strange Bedfellows", "The Maw of Chaos". ''The Metal Age'': part of "Trail of Blood", part of "Precious Cargo", "Kidnap". ''Deadly Shadows'': part of "Into the Pagan Sanctuary", "The Sunken Citadel". It's a thing.
* UnnecessarilyLargeInterior: The Halls of Echoing Repose, from the first game's "Down in the Bonehoard", as well as the Brobdignagian area in Constantine's Mansion in the ''Gold'' version.
* UpperClassTwit: Just about any of the overheard conversations between the nobility carry shades of this, in all three games. In the third game, even one of the nobles has had enough of their "Quite!" and "Yes!" and storms off in frustration.
* UselessUsefulStealth: Nicely averted (unsurprisingly, since proper stealth is the meat and potatoes of the whole series). Sure, you can still cut or blast your way through most enemies if needed, but it's not as fun or effective and you'll be scorned by both the game and the fans for it.
* TheVerse: [[FanNickname Thiefverse]]
* ViceCity: Especially in its criminal underworld and in the households of some more excessive nobles.
* VideogameCaringPotential: Adorable drunk guards and any other innocents you can't convince yourself to kill or harm. And for some, in the first game, [[RidiculouslyCuteCritter burricks]].
** Many players even have a pointless, yet heartwarming habit of leaving the knocked-out {{NPC}}s on softer surfaces (beds, carpets, sofas), [[PetTheDog as a sort of compensation for the inconvenience of being knocked unconscious]].
** The third game has a specifically scripted instance of this: You find out the place you're robbing is home to a blind, grieving widow. If you fetch her a glass of wine like she asks, don't kill her guests, and DON'T steal the sizeable inheritance her husband left for her, she'll reward your kindness a couple of missions later by sending you an expensive bottle of wine. (If you DO steal her inheritance, she sends a loyal servant to try and kill Garrett.)
* VideogameCrueltyPotential: Play the games the way they're meant to be played and you'll avoid it. But still, you can pickpocket virtually anyone (given the right circumstances), backstab anyone not aware of your presence from behind, snipe people and various fauna in the head with a broadhead arrow, blow up or gas people and creatures with fire arrows and bombs/mines, blackjack everyone in the city quarter and hide them in bushes or ignite puddles of oil and throw the unsuspecting innocents in there, blind people with flashbombs, blow zombies to chunky bits or dust with holy water arrows, etc., etc. And best of all, if you kill any normal living being, [[TheDevTeamThinksOfEverything you can clean up the puddle of blood]] [[AwesomeYetPractical by shooting a water arrow into it]]. Of course, you should steer away from any open violence, since in the end, [[VideogameCrueltyPunishment the guards or creatures will probably catch you and arrest or kill you]].
* VillainBall: [[spoiler: Gamall gets an example of this in Deadly Shadows. She was smart enough to take the Glyph of Unbinding away from the Keepers, but she didn't destroy it or put it somewhere where nobody could find it. Instead, she took it to her lair. On top of this, she wrote a crazed rant about it in which she explained why Garret would want it (it destroys her stone guardians), how he can utilize it (bind it to his blackjack), and how to use it (smack the golem in the back of the head with it). Last but not least, she left this rant right next to the Glyph itself.]]
* VitriolicBestBuds: [[TheFool "Dumb Guard"]] (a.k.a. Benny) and [[SmartGuy "Smart Guard"]] (a.k.a. Nick or Jored). [[OddCouple As different as night and day]], but [[BuddyCopShow good pals]] and [[TheyFightCrime co-workers]]. A lot of their conversations turn into pure CrowningMomentOfFunny.
* TheWatcher: The entire faction of the Keepers is secretly struggling since ancient times to preserve the balance between good and evil in the world and peace between the various factions (especially the Hammerites and Pagans). But even though the members of this monastic and scholarly secret society try their best, they're not always as neutral as they claim, or perhaps wish they could be.
* WeakButSkilled: Garrett, despite being far from a physical powerhouse, is able to regularly outwit and outmanuever burly guards and superhuman monsters through a combination of smarts and stealth.
* WhatMeasureIsANonHuman: On Expert difficulty, killing human civilians and guards is an automatic mission failure. This doesn't apply to animals, monsters, machines, undead or humanoid beasts. One exception is the Servants, [[spoiler:who are people who've been kidnapped, vivisected and turned into cyborgs/living weapons]]. Killing them on Expert difficulty also grants you a mission failure. A notable exception occurs in the [[spoiler:last mission of ''The Metal Age''. The Masked Guards are apparently Mechanists who started questioning Karras' increasingly unstable behavior and methods, earning them a hasty conversion into Servants (as evidenced by the blood on their chestplates). They'll actually [[ICannotSelfTerminate beg you to kill them]] and [[MercyKill thank you if you do]]]].
* WhoWatchesTheWatchmen: In ''Deadly Shadows'', it's clear that the Keepers have become this. While they obsessively watch and chronicle other factions and events in The City, they record very little of their own history. This is what allowed [[spoiler:Gamall]] the ability to rise unchecked. One note in the game even asks the question: "Who keeps the Keepers?"
* XMeetsY: [[{{Homage}} Garrett]] [[ShoutOut himself]]. Part Literature/PhilipMarlowe, part Literature/ArseneLupin, a pinch of RobinHood, some nods to Franchise/{{Batman}}, [[BadAss and all awesome.]]
** The series' setting itself could be described as a DarkerAndEdgier version of ''Literature/{{Discworld}}'' [[RefugeInAudacity on drugs]] + a somewhat [[{{Deconstruction}} deconstructed]] take on the LowFantasy and MedievalEuropeanFantasy tropes + heavy doses of SteamPunk and ClockPunk aesthetic + [[Creator/RaymondChandler Chandlerian]] FilmNoir.
** The overall stylistic tone is often pretty similar to the "NewWeird" fantasy works of ChinaMieville ([[UnbuiltTrope though the games slightly predate most of them]]).
** Also, the creators of the series acknowledged taking inspiration from authors and works as varied as Creator/FritzLeiber, MichaelMoorcock, Creator/UmbertoEco and ''Franchise/LupinIII''. German expressionist and classic FilmNoir movies (like the ''Film/TheCabinetOfDrCaligari'' and ''Film/TheThirdMan'') were also a large influence.
* YeOldeButcheredeEnglishe: The Hammerites speak like this to a hilarious degree. The Mechanists too, though they have their own idiosyncrasies.
* YouHaveOutlivedYourUsefulness: [[EyeScream In the most terrifying way.]]
* YouNoTakeCandle: Pagans, on the other hand, have a unique tribal-ish dialect to their speech, using "bes" for "is" and other "to be" permutations and frequently attaching the suffix "-sy" to the end of words.

----
!! In addition, the {{Game Mod}}s mentioned above contain tropes not seen or as prevalent as in the main games. These include:
* AdaptationDistillation: Or something close to it. A fair number of fan missions take creative liberties or outright ignore canon.
* ArtEvolution: Many [=FMs=] use custom resources for object, items and textures, making a fan-mission look like a completely different game!
* CreepyChild: And their toys, too.
* FanRemake: An odd variation: through accident and happenstance, the source code to the first two Thief games found its way into the hands of the public. A little over a year later, an anonymous source has been releasing patches to make the games run bigger, better and faster than ever before. "New Dark" has allowed fan-mission authors to use more detailed architecture, textures, and more intensive resources than was ever possible before, and even doing away with the old Dark Engine's limitations (thus killing the KillScreen phenomenon detailed below).
* GuideDangIt: Fan missions tend to be harder, with trickier clues, better hidden keys and switches, almost to the point of absurdity, leading to multi-page threads on the official forums asking for assistance.
* KillScreen: The default number of polygons that the first two Thief games can render on screen at any given time is 1024. Any higher than that and you get a "hall of mirrors" effect, and then the game crashes. Several ambitious fan missions skirt carefully close to this number at all times due to level of detail! Some even come with warnings saying "Don't look here or there at this point" to avoid a crash.
* ShoutOut: To many other games, TV shows, movies, and even other mission authors.
* WideOpenSandbox: The individual levels are very conducive to wasting time playing around and trying to find routes into every nook and cranny, and have plenty of rewards (both treasure and interesting easter eggs such as hidden dialogues) for doing so. Officially invoked in the third game, where the city itself is a HubLevel that you can sneak around exploring and robbing people between missions.
* WouldNotShootACivilian: While in the main game this only applies on "hard" or "expert", many fan missions make you auto fail if you kill an unarmed NPC by default.
----