''Please do not add any character tropes to this page. The Characters page for the entire series can be found [[Characters/MassEffect here]]. Link to the main page is [[VideoGame/MassEffect2 here]].''

The rest of this list can be found at:
* MassEffect2/{{Tropes A-F}}
* MassEffect2/{{Tropes G-M}}
* MassEffect2/{{Tropes T-Z}}

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* {{Nerf}}: A mild case. In the first game, biotics are pretty much a GameBreaker. Now, save for Stasis, biotics like Pull and Throw only work on enemies with no protection, balancing it out. Warp and Reave are both effective against biotic barriers and armor, but not shields, which are the most common form of protection by a wide margin. In addition, both have a longer travel time, making them useless against enemies in cover (Shepard, however, is able to curve their biotics around cover). The most significant nerf is probably the unification of cooldowns for all abilities of a character; whereas in the first game, you could Lift and Throw an opponent to juggle them in the air, in this game, you need another character to attempt something similar. This was done probably so the player can learn to use different characters' abilities in conjunction with one another -- there's an achievement, in fact, for doing this enough times.
* NeuroVault: 'Grayboxes', which are basically implanted computers, allow memories to be stored in them as well as enabling perfect recall. Kasumi's loyalty mission (from the DownloadableContent) is [[spoiler: to retrieve one of these, containing her ex-partner's memories of their time together... plus some sort of giant secret about the Alliance]].
** [[spoiler: ''Mass Effect 3'' reveals what that secret is. The Alliance carried out a black ops raid on a batarian outpost because the batarians discovered Reaper tech. If the batarian society at large found out about this they'd go to war with the Alliance; ''that's'' why Keiji told Kasumi to destroy that information along with the memories of him]].
* NeverTrustATrailer:
** Except for being a {{Badass}}, [[spoiler:Legion]] is nothing like the trailers described him. The trailers make it seem like he's [[TheOnlyOneAllowedToDefeatYou tracking Shepard to snipe them from far away]]. In actuality, [[spoiler: he doesn't even show up until the start of the last act, which triggers the events leading to the climax of the game]]. And instead of being a ColdSniper going to pop your head off... he's a ColdSniper [[StabTheScorpion popping enemy heads off]].
** They also tended to make the [[TrashTheSet destruction of the first ''Normandy'']] seem like a pivotal act or show stopper. It's certainly show-stopping, but it happens during the opening cutscene.
** You know that really awesome "Fight For the Lost" speech? Yeah, that's not actually in the game.
** Grunt was revealed in the Omega trailer, heavily implying that he would be recruited or at least important there. In the main game, there is only ''one'' Omega-related Grunt event. It happens during Garrus' recruitment mission. If Grunt is in your party when you speak to Garm before the actual raid on Archangel, Garm will question why a "young one" like Grunt is following Shepard, and Grunt will insist that Shepard is a good leader. Garm will dismiss this, believing Grunt could learn more about striking fear into enemies in the Blood Pack, and demonstrates this by shooting his vorcha lackey in the head.
* NewGamePlus: With some exceptions, carried over characters will be exactly as strong as a newly created one, [[BagOfSpilling which is to say, not at all]][[note]]Dying and being revived over the course of two years will do that to a person[[/note]]. A level-60 character carried over from the first game, however, will start at level 5 and get a whole slew of other bonuses as well. Additionally, a rich character carried over from the first game will start off the second game rich. You can start a new game with a Mass Effect 2 character. You keep your levels and your abilities but not your squadmates (though their levels are tied to yours, and they still have the same number of stat points available to distribute) or your upgrades. You do have to mine for those again. More annoyingly, you lose all your morality points, making certain Paragon or Renegade choices harder to attain than if you imported an [=ME1=] character.
* NGOSuperpower: The game places you in the hands of Cerberus, a human supremacist organization which owns multiple deep-space habitats, funds multibillion-dollar resurrection projects, builds bleeding-edge spacecraft, and decks its people out in spiffy uniforms. The Citadel Council calls them terrorists.[[AffablyEvil They take good care of you, and all they want in return is for you to give humanity galactic supremacy.]] After the abuse you'll take from the Council, you might just give it to them. Subverted in that, though they have [[{{Fiction500}} absurd amounts of capital]], [[spoiler:EDI will eventually tell you that there are approximately 150 Cerberus operatives organized into three cells according to EDI, something that is quite believable given how terrorist groups organize in the real world. Case in point, the "Black Hand"/Unity or Death, which had less than 400 members total and even fewer in the inner circle, but who caused WorldWarOne. They're basically [[TheIrishQuestion the IRA]] {{IN SPACE}}.]]
* NiceJobBreakingItHero:
** On the second lava planet in the Firewalker DLC, you activate a panel that brings an abandoned base's generators online... which disturbs the lava flow to the point that the whole region starts to erupt.
** The ending of the ''Arrival'' DLC. BIG TIME. Sure, you [[spoiler:stopped the imminent Reaper invasion by literally ''minutes'']], but at the cost of [[spoiler:300,000 batarian lives. And they know you're to blame. As it turns out, Shepard gets to spend the time between the end of ''Mass Effect 2'' and the start out of duty, not because they're being tried for what they did, but because if Shepard wasn't, the batarians would go to war with the Alliance. On top of that, you just ''blew up a Mass Relay!'']]
** To a lesser extent, after the ''Purgatory'' mission, Shepard receives an email from one of the serial killers that got free as a side effect of the whole freeing Jack-thing.
** Near the end of Zaeed's loyalty mission, you're given the choice to save a bunch of factory workers or continue the mission as planned. If you follow Zaeed's advice you gain his loyalty, but at the cost of many innocent lives. If you decide to be the good guy, you fail to gain Zaeed's loyalty (which can be won back, but you're gonna need a hell of a lot of Paragon or Renegade points to do it). [[spoiler: If you waited until after the suicide mission (and have at least two surviving squadmates other than Zaeed), a [[GoodIsNotSoft Paragon Shepard]] can also just leave him to die.]]
* NineOutOfTenDoctorsAgree: Parodied with the increasingly unsettling Tupari vending machine on the Citadel. "Nine out of 10 Tupari drinkers recommend Tupari to their friends! '''''The last one is on my list.'''''"
* NintendoHard: Expect to reload a lot if you play on [[HarderThanHard Insanity]] difficulty. Ordinary gunfights that you blew through in Normal difficulty suddenly become lengthy, tactic-driven encounters where the slightest mistake will get you killed.
** Insanity on a new level 1 character tends to go past NintendoHard into Probing Uranus Hard, though not for any fault of the game itself. Rather, lacking any powers or upgrades means that taking down even one foe can use up all of one's ammunition. Ironically, though, this also means that as you progress through the game, Insanity gets ''[[DynamicDifficulty easier]]''.
** When you fight mercs on Insanity, it's challenging but not too bad. Any place where you fight Collectors or products of the Reapers will have you crying like a little baby.
** This inverts if you're playing as an Adept. You can munch through the Collectors' biotic barriers like they're toffee, whereas the mercs' shields are like kryptonite. Blazing through the Collectors probably sounds appealing -- but the cost? Every other character in the game becomes impenetrable, and you're expected to cut through them with a pistol and a sub-machine gun. Good luck! However, if you are playing with a bonus talent from the start, take Energy Drain (Tali's Loyalty power) so you can cut some slack on your tech-oriented squadmates.
** Possibly the most frustrating battle on Insanity (and most other difficulties) is the final "room" on Horizon, where you have to deal with a pair of Scions. With a couple waves of Husks [[SarcasmMode for fun]]. If you get hit by both Scions at the same time, you're dead. If both are after you and one of them clips you, the other one WILL hit you too. And you will be dead. Hell, if one hits you with two Shock Waves in a row, you're dead. All while you're scrambling back and forth trying to avoid the Husks coming at you from both sides. It's no wonder many players [[GoodBadBugs exploit]] the fact that those Scions won't attack until you enter the room, but they can still be seen (and thus sniped to death) if the player positions themselves correctly. There is also possibility of exploiting the room architecture to almost completely eliminate the danger Husks pose to Shepard by climbing on one [[InsurmountableWaistHighFence of the large crates]] lying in the area, which makes the fight significantly easier.
** The derelict Reaper is basically the same one-two combo of Scions and Husks, but given that you'll be a higher level and can generally see the Scions coming from further away it's usually not QUITE as bad. Still vastly more difficult than anything else the game throws at you which doesn't involve both Husks and Scions at the same time. But it'll be okay. You've been getting all your upgrades, right?
*** Having the Widow sniper rifle by this point makes this a whole lot easier as well, with each shot being capable of taking out up to a fourth of a Scion's armor, minimizing the need to resort to heavy weaponry.
** The usually short side mission where you have to defend an injured quarian from a pack of varren as your shuttle moves in to pick-up? On Insanity it can effectively become That One Mission. If the quarian dies, it's a NonStandardGameOver. Instead of placing your squadmates in cover, you're better off using them as obstacles to keep the varren from getting to the quarian, since at least the varren mostly ignore your squadmates.
** Let's take a moment to talk about [[spoiler: the Collector trap]] on Insanity. Whoever thought that it would be fun to stick you on an isolated platform with virtually no cover while Scions, Collectors, and the ever-taunting Harbinger beat you mercilessly and repeatedly into the ground needs to be kicked in the beanbag. Due to the arrangement of the platforms in this room, your squadmates will die so often and so easily that you will come to despise them.
* NoEndorHolocaust: Soundly averted. Sovereign's death and subsequent explosion did significant damage to the Citadel, adding to the thousands of casualties from the geth attack. Anderson notes that even with the station's army of engineers and the Keepers, full recovery will take at least five years. It's been two already.
** And again averted, perhaps even more severely, [[spoiler: in the ''Arrival'' DLC. The destruction of the Alpha Relay wipes out ''an entire system'', killing over 300,000 batarians -- and Shepard had to spend the time between the second and third game out of sight as a result, lest the batarians go to war with the Alliance.]]
* NoExceptYes: Cerberus isn't a human supremacist group, they're a human ''survivalist'' group. That operates by treading upon other space-faring species whenever convenient. There's a difference there. Yep. It's not that they hate aliens, it's that they love humans! And they hate aliens.
* NoOntologicalInertia: A minor example. Flashbang grenades will fizzle out in a harmless puff of smoke if you kill the mook that threw them before they detonate.
* NonstandardGameOver:
** Very late in the main game, [[spoiler:Joker being {{impaled|WithExtremePrejudice}} by a Collector during the ambush results in one of these]].
** You also "enjoy" one by getting it on with [[BlackWidow Morinth]], provided you [[TooDumbToLive ignore the game's MANY warnings against doing so]].
** Any ending where [[AnyoneCanDie Shepard does not survive the suicide mission]] counts, as that save cannot be imported to the sequel.
** If you do not unlock the valves for your chosen Tech expert during the SuicideMission, it will lead to an abrupt Game Over.
** The ending of the ''Overlord'' {{DLC}}, if you fail to stop the rogue VI from [[spoiler:uploading itself to the ''Normandy'']], you are treated to a scene where [[spoiler:[[http://www.youtube.com/watch?v=ygeLJ64FxUc it takes over EDI,]] presumably setting off a technological apocalypse. Or at the very least makes the ''Normandy'' unusable]].
** During ''Arrival'' {{DLC}} [[spoiler: if the ever-present timer of Reaper Apocalypse actually runs out, you get treated to a cutscene of the Reapers harvesting the galaxy, including major characters. Afterwards, you get a Critical Mission Failure]].
** Also during ''Arrival'', [[spoiler: if you waste too much time while escaping from the asteroid, a cutscene will play showing the collision with the Alpha Relay, presumably expunging Shepard and their crew]].
* NonStandardSkillLearning: Squad members' [[EveryoneHasASpecialMove unique loyalty powers]] can be learned by Shepard, too, but only after completing their personal loyalty missions (and you can only have one of them at a time).
* NoOneCouldSurviveThat: In Freedom's Progress, [[WhatAnIdiot Prazza]] leads a company of quarian marines against a [[HumongousMecha YMIR heavy mech]]. The YMIR promptly [[CurbStompBattle curbstomps]] them. Jacob even utters this trope almost verbatim.
* NoOneGetsLeftBehind: There is literally an achievement for this, if everyone makes it out of the SuicideMission alive.
** Gathering the dog tags of those who perished from the first ''Normandy'' is a touching posthumous version of the trope.
* NoOSHACompliance: {{Lampshaded}} by Shepard during the Shadow Broker DLC.
--->'''Shepard:''' Not even a guardrail. I bet the Broker's agents love patrolling the hull.
** Averted elsewhere - there are handrails and safety notice everywhere in the geothermal plant on Aite[[note]]the setting of the ''Overlord'' DLC mission[[/note]], and the oil refinery on Zorya[[note]]where Zaeed's loyalty mission is[[/note]], and on the Ceberus installations [[spoiler: onboard the derelict Reaper]].
* NoodleIncident: Zaeed's vaguer anecdotes fall into this.
* NothingIsScarier:
** There isn't a single enemy to fight on the way through the crashed geth ship in the ''Overlord'' DLC, which does nothing to prevent it from being downright terrifying due to the atmosphere and the constant threat of the ScareChord-like screams of the VI. Fighting several dozen geth on the way out is far preferable to having to take the "safe" route a second time. The fact that you're walking past dozens, maybe hundreds of inactive geth, makes it even worse. At any moment you expect them to stand up and start shooting...but they never do. Player with fragile nerves tend to freak out more and more as nothing continues to happen.
** The same thing goes for the [[spoiler:supposedly disabled Collector vessel]]. The regular appearance of convenient chest-high walls, which usually indicate an upcoming firefight, don't help.
** There's also a sidequest on a space station where everyone's been killed by the computer virus corrupting the station's VI. Throughout the mission you expect to have it turn on you at some point, but it ''never'' happens. Even knowing this on subsequent playthroughs, it still doesn't make the mission any less creepy.
* NoticeThis: It's very important to keep stocked up on ammo, and spare clips are very small. Good thing they shine and glint to make them easier to find.
* NotInThisForYourRevolution: Of all the ''Normandy'' crewmembers that Shepard can interact with, the only two who seem to really believe in Cerberus's political agenda are Miranda and Mess Sergeant Gardner. The others all make it very clear that they're only there to fight the Reapers.
--> '''Tali:''' I assumed you were undercover, Shepard. Maybe even planning to blow Cerberus up. If that's the case, I'll loan you a grenade. Otherwise, I'm here for you, not for them.
* NotPlayingFairWithResources: When the heat clip mechanic is introduced in the second game, Shepard is apparently the only person in the galaxy who is affected by it.
** Which works out to your advantage as much as it does the enemies: the enemies have unlimited ammo, but so do your ''squadmates''. They don't fire as fast as you do and thus won't kill enemies as quickly, but if the enemies in the room aren't strong enough to knock them out you could theoretically take cover behind a crate and let your squadmates do all the work.
* NotQuiteTheRightThing: Most of the choices for specialist roles in the SuicideMission are fairly obvious, such as Jack or Samara for the biotic bubble. Someone, however, will always advise against picking [[spoiler: Miranda]] as a sub-leader. [[spoiler: In spite of this, she ''is'' one of the valid choices -- as she puts it, the mission isn't a popularity contest]].
* NotSoDifferent:
** [[spoiler: If you destroy the Collector base in the SuicideMission, Legion]] comments that Shepard chose the path of technological self-determination, the path that the [[spoiler: true geth]] took when presented with [[spoiler:Sovereign's offer]], and then makes a comment that says basically this.
** Shepard is gradually being shown to be this way with Saren. Particularly notable at the end of the ''Arrival'' DLC, with [[spoiler: Hackett warning Shepard that, Spectre or no, they will be called to task for killing three hundred thousand batarians, just like Saren was being called to task for attacking Eden Prime]].
*** And Shepard at least [[spoiler:turns themself in to the Alliance voluntarily to answer for their actions, unlike Saren who kept denying his involvement in the Eden Prime slaughter and murder of Nihlus until Shepard gathered evidence to prove his crime]].
** Specifically called out in the final fight with [[spoiler: the asari Spectre]] in the ''Lair of the Shadow Broker'' DLC. When you accuse her of going too far in causing the death of innocent civilians just to protect an information source, she asks if you've done anything morally different. Of course, if you are playing a Paragon Shep, yes, yes indeed you have. She still calls you out on working for Cerberus much like how she worked with the Shadow Broker.
** In the ''Overlord'' DLC, Gavin Archer likens the audacity of his attempts to subjugate the geth to Shepard seeking out the Reapers.
* NotTheIntendedUse: There are a few places in the game where it's possible to skip entire waves of enemies. All of these fall under Alternative Skill; they're easier than just straight up fighting, but they're not ''effortless'', either.
** In several places, your objective is to simply get to a specified place; it doesn't matter whether you kill all or even ''any'' of the enemies going after you, so you can just sprint over to the checkpoint and trigger the next cutscene. This tends to be easiest as an [[InvisibilityCloak Infiltrator]] and, to a lesser extent, [[BulletTime Soldier]] and [[FoeTossingCharge Vanguard]], though it's not impossible with the other classes.
** Just before the Horizon spaceport battle (where you have to activate the defense turrets), there's a spot where, if you stand in ''just the right place'', you can see and kill the two Scions hiding behind the control panel without actually triggering combat, and the Husks that are supposed to harass you will never appear. This can actually be less practical depending on your class and loadout; if you have guns with high rate-of-fire but low accuracy, and if your powers don't include Warp or Incinerate[[note]] the spot is too far away to lock onto the Scions, but they can be hit with Warp/Incinerate since powers without lock travel in a straight line to where the crosshair is pointed[[/note]] it will probably be faster to go through the fight normally, even if you die several times.
** During the second-to-last battle in Tali's loyalty mission, deploying a combat drone at just the right time in just the right place will immediately end the battle and trigger the cutscene where [[spoiler:Shepard and Tali find Rael's body]].[[note]]The reason this works is because the game treats your combat drones as squadmates, and any squadmate can trigger a cutscene.[[/note]] However, doing this will also glitch the cutscene so all of your squad has their equipped guns glued to their hands. Hugging Tali (the Paragon interrupt) suddenly becomes a lot less heartwarming when Shepard has a freaking ''[[{{BFG}} nuke gun]]'' strapped to their hand.
*** In line with the InstantWinCondition of this particular battle, simply charging straight towards the open doorway will immediately trigger the cutscene -- without the aforementioned bug.
* NowYouTellMe: Happens several times.
** Chorban, a salarian whom you can help in the first game emails you with information that reveals that the Citadel keepers are deceptively malevolent, and that they're really ticking time bombs working for a hostile alien species. [[spoiler: Though you can find that out in the first game easily enough]].
** Shepard's response during [[spoiler:Legion]]'s loyalty mission, after the latter mentions that they have three minutes to escape.
* NPCAmnesia: Particularly frustrating when talking to Tali or Garrus after successfully pursuing the RomanceSidequest, since they go back to saying they'll "find a way" to make it happen... when you already did. Later fixed in a patch.
* ObligatorySwearing: The writers apparently decided to live up to the enhanced rating.
* OffhandBackhand: A Renegade Interrupt in the Project ''Overlord'' DLC gives you the option to do this to a LOKI mech that your team mates have recently [[{{Pun}} disarmed]].
* OffModel: Dr Chakwas is wearing her Cerberus SR2 uniform in the opening cutscene, rather than an Alliance uniform, even though this would require her to be able to not only travel through time, but wear the uniform of a terrorist organization on the ''bridge'' of an Alliance frigate.
* OffingTheOffspring. [[spoiler:Samara's duty]], which leads to one of the more painful scenes when she talks about why she has to kill [[spoiler:Morinth]].
* OhCrap: Joker's reaction to a [[spoiler:Collector cruiser]] dropping out of FTL right on top of the ''Normandy'' SR-1.
** Later in the game, when [[spoiler: the Collectors do it again to the SR-2]], he ''starts'' with "Oh, shit!" He then follows it up about a dozen times during his subsequent panic. "What the shit!"
** Mouse, during Thane's loyalty mission. He turns around to find Thane and Shepard wanting to talk to him. Thane advises him to change his pants later.
** During the ''Arrival'' DLC, Shepard has this reaction when they walk into Object Rho's storage room and sees the big, indoctrination-inducing Reaper artifact sitting right out in the open, with no precautions or protection to prevent its influence from affecting the Project's personnel. A minute later, Shepard is being swamped by indoctrinated soldiers.
*** The Project scientist/medical tech during [[DownloadableContent Arrival]] when Shepard wakes up.
** Wilson, in the opening mission, reacts this way - very briefly - to Miranda turning out to still be alive.
* OnceKilledAManWithANoodleImplement: [[BadassBookworm Professor Mordin]] once killed a [[ProudWarriorRaceGuy krogan]] with "farming equipment". ''Lair of the Shadow Broker'' demystifies the {{Noodle Implement|s}}: [[spoiler: He stabbed a krogan. [[EyeScream In the eye.]] ''[[BadAss With a pitchfork.]]'' It's also the reason why his head's all wrong]].
* OneBulletClips: In every case except for the one-shot-per-clip weapons (the Widow and Mantis sniper rifles and the Claymore shotgun.)
* OneHitKill: Once you upgrade it some, the Widow anti-materiel (i.e. ''[[ThereIsNoKillLikeOverkill anti-tank]]'') sniper rifle can easily take down most non-boss enemies in a single shot. Especially satisfying to use on Harbinger mid-transformation.
--> '''Harbinger''': [[KilledMidSentence ASSUMING DIRECT CON-*headshot*]]
** The M-920 Cain can also kill most enemies, and several bosses, in one shot. On the lowest difficulty level, there are only a couple of enemies that ''aren't'' killed with a single Cain shot, most notably the final boss, and even ''it'' is reduced to a sliver of health (although the Cain might not kill the Geth Colossus in one shot either if you don't fire it at the right time).
** Even on Insanity, where all enemies have additional layers of shielding or armor, a charged shot from the DLC Geth Plasma Shotgun, along with the right damage upgrades, is still powerful enough to kill a merc.
* OneHundredAndEight: Liara's age, as she tells you in the ''Lair of the Shadow Broker'' DLC. This is barely an adult by asari standards, a species whose lifespans usually reach up to a thousand years.
* OneManArmy: Shepard, especially during the ''Arrival'' DLC mission.
* OneSteveLimit: Played with. During Thane's loyalty mission, you need to meet with a small-time criminal named Mouse. It turns out that he and Thane know each other; Thane didn't mention it at first because he thought it couldn't be the same Mouse.
* OneSizeFitsAll: Averted. Only Shepard can change their armor.
* OneWayTrip: Any ship going through the Omega-4 mass relay isn't coming back. That's been the case for as long as records can remember. And it's up to Shepard to break that streak.
--> '''Thane:''' Attacking the Collectors requires passing through the Omega-4 relay. No ship has ever returned from doing so.\\
'''Shepard:''' My ship will be the first.
* OnlyMostlyDead: One of Shepard's responses when encountering the guard outside the Citadel.
-->'''Guard:''' Our scanners are picking up false readings. They seem to think you're, uh, dead.\\
'''Shepard:''' I was only mostly dead. Try finding that option on government paperwork.
* TheOnlyOneAllowedToDefeatYou: Both the Paragon and Renegade options in settling the dispute between Jack and Miranda lead to this as Jack vows to keep Miranda alive during the attack on the Collectors so that Jack can rip her apart herself.
--> '''Jack:''' (''to Shepard'') She'll survive. I'll make sure of it. (''faces Miranda'') Then... I will tear you apart myself.
* OnlyPointTwoPercentDifferent: In a rare non-human example of this trope, the game has, during the Collector ship mission, the discovery that [[spoiler: the [[InsectoidAliens Collectors]] you've been fighting are actually mutant [[ThePrecursors Protheans]], fair enough. Then you realize that the statues of Protheans you see in Mass Effect 1 look absolutely nothing like Collectors, for one thing, Protheans look as if they're mammals, while Collectors are, as said before, InsectoidAliens. However, in ''VideoGame/MassEffect3'' DLC, you meet a Prothean, who looks a lot more like the Collectors, and he tells you the aliens depicted in ''VideoGame/MassEffect1'' weren't Protheans, but rather the ''{{Precursors}}'' to the Protheans, called the inusannon]].
* OnlySaneMan: Quarian Admiral Zaal'Koris vas Qwib-Qwib. While, yes, Koris is a JerkAss when you meet him, his motives in the trial are to prevent the Migrant Fleet from going to war with the geth, because he feels the quarians wronged the geth in the first place, and that it would be suicidal to do so as well. [[spoiler: Of course, anyone who's spoken with Legion knows that geth want nothing more than to be left alone or even make peace with the quarians, if they even thought of the possibility. They don't even live on the quarian homeworld, having only mobile platforms to clean up the wreckage and decontaminate the ruins from the war]]. Somebody give this man a medal.
** [[spoiler: His OnlySaneMan status is ramped UpToEleven in VideoGame/MassEffect3, losing the {{Jerkass}} along the way.]]
* OperationBlank:
** Project Lazarus. [[MeaningfulName Which brings Shepard back to life.]]
** Project Overlord from the ''[[ExactlyWhatItSaysOnTheTin Overlord]]'' DLC. Also a MeaningfulName: the purpose of the VI is to [[spoiler:act as figurehead to the geth in the same way as Saren, and thereby avert a major war with them.]]
** Subverted with the Project in the ''Arrival'' DLC. It's simply known as... the Project.
* OptionalStealth: The first part of the ''Arrival'' DLC gives an achievement for stealthy completion, but is perfectly doable by killing all the guards instead of sneaking past them.
* TheOtherDarrin: The voice for the man trying to get a refund from the turian shopkeeper on the Citadel doesn't sound '''anything''' like it did in the first game. If he didn't specifically mention that he'd been trying to get a refund for two years, most players probably wouldn't have noticed it was him.
* OurGraphicsWillSuckInTheFuture: Holoscreen or not, everything seems to be monochrome and lo-res.
* OurVampiresAreDifferent: The ardat-yakshi are asari who, upon having sex with people, don't experience a gentle psychic 'melding' but rather dominate and ravage the other person's nervous system, causing brain hemorrhaging and nearly instant death. Said to gain in intelligence and biotic strength when they do so, ardat-yakshi quickly become addicted to mating; in ''3'' Liara may offhandedly describe it as the urge to "feed".
* OurWeaponsWillBeBoxyInTheFuture: Most guns are pretty sleek, but it is universally agreed upon that the M-300 Claymore shotgun is a brick with a barrel.
** When the M-98 Widow sniper rifle is folded up and attached to the back, it looks very much like a hexagonal tube.
* OutlawTown: Omega. It's been this for centuries, and sometimes, it'd be wiped out or abandoned, only to get turned back into a hellhole.
* OutWithABang: Some asari are ardat-yakshi (which translates to "Demons of the Night-Winds" in an ancient asari dialect) born with a rare genetic disorder that causes their [[MaleToFemaleUniversalAdaptor Female-To-Whatever Universal Adaptor]] to barbecue the nervous system of whoever they couple with - stealing their LifeEnergy and enhancing their intelligence and biotic powers in the process. That's right, some of these Space Elves are HornyDevils! The one you meet can insist that the experience is the most pleasurable thing imaginable even in its lethality, but who can say otherwise?
* OutsideTheBoxTactic: Using the [[CharmPerson Dominate]] ability on a [[HumanoidAbomination Husk]] will kill it instantly. As does using Throw or Concussive Shot, and Shockwave will just ''slaughter'' them. Freezing them also works, shattering them instantly.
* PaletteSwap: All of the non-DLC outfits you can unlock for your team mates are just the same outfit in an alternate color, going for a black, red and gold theme, although there are other spot colours - Garrus's "loyal" armour has blue as well.
* PeoplePuppets: In the ''Overlord'' DLC, [[spoiler:Shepard is briefly controlled through their synthetic implants by the human/VI-hybrid]].
* PercussivePickpocket: In the mission ''The Crime in Progress," Shepard has to settle an argument between a volus and a quarian. The volus on the Citadel accuses a quarian of intentionally bumping into him and stealing his credit chit while the quarian denies it.
* PerpetualStorm:
** The planet Hagalaz suffers from a constant thunderstorm during sunset and sunrise, thanks to its temperature extremes. The [[KnowledgeBroker Shadow Broker]] hides their CoolStarship in the storm, using it as both concealment and a defense against anyone who manages to find the ship.
** There's also Lorek, which according to a tooltip is wracked by constant storms.
* PetTheDog: Cerberus. They [[spoiler: revive]] Shepard and the crew of the ''Normandy'' consists of a lot of nice people who just want to protect humanity. Some players -- ones who didn't get the sidequests in the first game which have the organization [[PlayingWithSyringes working]] on [[NotUsingTheZedWord husks]], [[OurZombiesAreDifferent thorian creepers]], and [[InsectoidAliens rachni]], then luring Alliance soldiers to death by [[SandWorm thresher maw]], ''then'' murdering an Alliance officer who asked too many questions -- can't even understand why [[spoiler: Ashley/Kaidan calls Shepard out on [[WhatTheHellHero working with Cerberus]]]].
** ''3'' proves that [[spoiler: the friendly, personable crew was hand-picked to allay and deflect Shepard's suspicions. Fortunately several of them defect and continue to be friendly and personable, not terrorists]].
** Also done much more literally on Tuchanka, with a merchant's varren that Shepard can pet.
--> '''Shepard''': [[CrowningMomentOfFunny Good varren.]]
* PlanetOfHats: Justified. At one point Mordin Solus remarks on the atypical genetic diversity among humans compared to other space-faring races, and how this encourages other species to use them for experimentation. Shepard is not amused by this.
--> '''Shepard:''' That kind of crap is what makes Cerberus start to seem like a good idea!\\
'''Miranda:''' My report will mention that.
* PlanningForTheFutureBeforeTheEnd: During Thane's romance path, it's possible for him and Shepard to make plans to visit a desert. Even in the off chance that both Shepard and Thane survive the SuicideMission, [[DeadManWalking Thane has about nine months to live]]. This is never mentioned again, but the events of ''VideoGame/MassEffect3'' imply that [[spoiler:no, they never went to that desert]].
** In the ''Citadel DLC'', Thane's video messages say that he visited an desert on Earth [[spoiler: but with his son Kolyat, not Shepard]]. It's notable that this scene is one of the few times we see Femshep cry. PlayerPunch indeed.
* PlayableEpilogue: If Shepard survives, the player can go back and finish everything that hadn't been previously completed. In addition, the {{DLC}} packs ''Lair of the Shadow Broker'' and ''Arrival'' are intended to be played after the main campaign is finished, although they can be completed at any time after Horizon.
* PleaseWakeUp: Tali has this reaction to a particular body found during her loyalty mission, thinking that they're FakingTheDead and there's no way they could actually have died. Makes it all the sadder when it sinks in that they're not faking. It's probably no wonder that there's a Paragon interrupt in that scene, just to make it all the more emotional.
* ThePlan: Cerberus is practically ''built'' on them.
* PlotArmor: [[spoiler:Miranda]] won't die before the final confrontation with the [[spoiler:Human-Reaper]], even if she's not loyal. In fact [[spoiler: she can still get carried off by Collector swarms (certain death for anyone else) and pop up fine in the very next scene, with no comment from anyone. Shepard is arguably even [[GenreSavvy aware of this]]; if anyone else gets carried off, Shepard screams their name in horror. If Miranda gets carried off, Shepard just stares after her, as if saying 'eh, she'll be fine.']] Once the final boss shows up, [[spoiler:Miranda]] can die like any of the other crew members.
* PlotHole: A very minor one when you [[OldSaveBonus import your ME1 character]] but choose to change classes. Miranda was told to bring Shepard back "exactly" the way they were before dying? Okay. How is it possible for a Soldier!Shepard to suddenly get biotics while still being "exactly the same"? Shepard doesn't even [[LampshadeHanging lampshade]] their new powers.
** Shepard was actually stated to always be a biotic in Mass Effect 1 during conversations with Kaidan, but not strong enough to get picked up for BAaT or use it in combat. Plus, Shepard always could have been changing his specialization before he got spaced or received secondary eezo exposure during the ''Normandy'' crash. See NewPowersAsThePlotDemands on [[Characters/MassEffectCommanderShepard Shepard's character page]] for more details.
* PlotTailoredToTheParty: The SuicideMission, big time. [[PlayingWithATrope Played with]], since you ''can'' put just about anyone onto the necessary tasks, but sticking the wrong man on the job has [[DownerEnding horrific results]]. Or, [[YouBastard you can]]... [[UriahGambit strategically misplace]] [[VideoGameCrueltyPotential one you dislike]]. That is, [[VideoGameCaringPotential unless you're considering]] [[DeathSeeker Thane's situation]].
* PornStash:
** You can collect one by buying the "Fornax" magazine on Omega.
** Joker's "entertainment bookmarks" contain a few kink sites apparently illegal in Citadel Space, according to EDI. Unless that is a joke.
*** If you wait next to Joker long enough, he'll accidentally send to his main console speakers a porn feed he intended for his earpiece, a very conspicuous case of TheImmodestOrgasm.
** ''Grunt,'' of all characters, has a stash of asari porn and several back issues of the krogan edition of Fornax, as seen in his dossier files. Notable for including "Vaenia" (the same vid Joker suggests you "re-enact" with Liara after the Shadow Broker mission) and "Asari Confessions 26: True Blue."
*** However, it seems like ''everyone'' regardless of species has watched Vaenia. Apparently the actresses play very glamorous characters.
** According to his dossier, Jacob also owns a copy of ''Asari Confessions 26''.
* PostCyberpunk: Kasumi's loyalty mission.
* PostMortemComeback: The derelict Reaper ''still'' influences those that were tempted enough to board and live in it, like the investigation team by Cerberus. It would make Creator/HPLovecraft himself [[FascinatingEyebrow raise a brow]].
--> '''Research Log''': The god is dead, but even dead gods can dream.
* PowerPerversionPotential:
** The possibilities inherent in dating a biotic are intriguing. If you romance either Jack or Miranda, Mordin can give you some advice:
-->'''Mordin:''' Biotic ability also gives benefits. Forwarding booklet to your quarters; includes diagrams, exercises, inventive uses of mass-effect fields...
** The nerve stimulation systems for the encounter-suit-wearing species are ''supposedly'' there to allow tactile interaction with the world outside the suit. But the potential for [[ElectricInstantGratification so much more]] is so obvious that discussion of ''those'' uses are pretty much the only times the systems are ever mentioned (see the quarian in the Eternity lounge, the volus at the Serrice Technology sales stand, and Tali, whose Shadow Broker dossier uses this to suggest some degree of sexual frustration.)
* PoweredByAForsakenChild: Various Cerberus projects, but [[spoiler:Overlord]] from the DLC of the same name kind of stands out.
-->[[spoiler:'''David:''' The square root of 906.01 is 30.1... it all seemed harmless...]]
* PrecisionFStrike:
** The one rule on Omega - "Don't ''fuck'' with Aria."
** Also, during Garrus's loyalty mission, if you play it as a Paragon:
---> '''Shepard:''' [[spoiler:''(deliberately blocking Garrus's shot)'']] I'm the only thing standing between you and a hole in the head.\\
[[spoiler:'''Sidonis:''']] ''[[OhCrap ...fuck.]]''
** Jack will also react this way during her loyalty mission if Paragon Shepard keeps her from shooting another survivor from the facility she was imprisoned in as a child.
** If, as a male Shepard, you turn down Jack's advances and romance someone else instead, you will not get another conversation with her except for two words:
--> '''Jack:''' Fuck off!
* PreorderBonus: If you pre-ordered at [=GameStop=], you get a M-490 Blackstorm heavy weapon[[note]]Which shoots ''exploding black holes''[[/note]] and the [[http://masseffect.wikia.com/wiki/Terminus_Armor Terminus Armor]], and if you pre-ordered at [=EBGames=], you get the [[http://masseffect.wikia.com/wiki/Inferno_Armor Inferno Armor]]. However, the Inferno Armor is now available as part of the Equalizer Pack DLC, and the Terminus Armor and Blackstorm weapon are available as free DLC.
* PressXToNotDie: {{Reconstruct|ion}}ed with the "Paragon/Renegade Interrupts", where you hit a button during a conversation to administer a CooldownHug, a [[TalkToTheFist Talk To The Headbutt]] or even ''[[DestinationDefenestration throw a jerk out a window]].'' They're optional, often heavily foreshadowed, there's no real penalty for not doing them (except for being left with dialogue choices which give significantly fewer morality points than from taking the interrupt), and they're not supposed to be at all difficult to hit. They allow a ''lot'' of extra options that wouldn't work in a normal speech without being awkward, like interrupting someone while they speak -- a necessity with [[MotorMouth Mordin]].
* PrisonRape: Implied, by one comment by a male prisoner in the PrisonShip ''[[TheAlcatraz Purgatory]]'':
-->'''Prisoner 780:''' [...] And you got to watch out...damn, but someone's always after your stuff. Your smokes, your clothes, your... pride... ''(looks away uncomfortably for a moment)'' I haven't taken a shower in three months.
** If you take Jack into the restroom up in the Dark Star nightclub located on the Citadel, she recalls an incident [[spoiler: where she was ambushed by both prisoners and GUARDS in a bathroom, killing two in the process, but failing to stop the rest]] back in Purgatory. She never forgot. And neither did they.
* PrisonShip: The ''Purgatory'', a type 2 dumping ground for the worst criminals who don't even belong on a planet. That said, the ship isn't run by any government; it's run by the Blue Suns, a mercenary group that uses it as just another pirate setup: taking on prisoners for money, or releasing them into the hands of whoever pays them, using it as a holding place for hostages, and threatening to release the most psychotic and violent monsters in their holds onto systems whenever they need a bit of cash.
* PrivateMilitaryContractors: Plentiful, primarily among them the Blue Suns, Blood Pack, and Eclipse.
* ProductPlacement: You can hear an advertisement for Exoderm while on Illium.
* {{Profiling}}: The "Crime in Progress" sidequest on the Citadel.
* PsychosomaticSuperpowerOutage: Implied slightly. Your squadmates unlock their final powers after Shepard helps to resolve any "distractions" they have.
* PunchClockVillain: The mercs Shepard fights in most missions are just doing what they're paid for and don't have anything personal against the hero. The ones who teamed up to take down Archangel are an exception, since they actually wanted to kill him and no one hired them to do it -- in fact, they hired ''you'' to help.
* PunctuatedForEmphasis:
** '''WE. ARE. HARBINGER.'''
** '''I! AM! KROGAN!!'''
* PyrrhicVictory:
** The (non-canon) worst ending. Shepard succeeded in destroying the Collectors, but at the cost of {{every|bodysDeadDave}}one aside from [[spoiler:Joker]]. [[spoiler:Joker]] is left alone to try to warn the entire galaxy about [[spoiler:the coming of the Reapers]] without any of the unique skills Shepard and Co. brought to the table and ''just'' enough data recovered to show that [[spoiler:the Reapers are on the march]].
** [[spoiler: The end of the ''Arrival'' DLC. Shepard defeats the Reapers and buys the galaxy some time. However, an entire solar system was destroyed by Shepard's hand, the batarians are looking to use that as an excuse for war with the Alliance, and Shepard must stand trial. And the Reapers haven't been stopped, only delayed...]]
* RainbowPimpGear: Whether this is averted or played straight is under the player's control, as you can now fully customize the color, camouflage patterns, and tint of your armor. Played ''very'' straight at the start of the game -- Ashley, Liara and ''Kaidan'' will run up to you in white/pink Phoenix armor during the opening scenes. Justified for Ashley as this is her default outfit from both games, but heads into full-on "WTF?" territory with Kaidan, as his default armor is a very plain dark grey Onyx armor. At least he changes armor by the time you see him again on Horizon.
* RapeIsASpecialKindOfEvil: The loyalty sidequests include: blowing up a facility where children were experimented on (Jack), helping hide the sister of one of your allies from her abusive father (Miranda), and assassinating gang leaders (Zaeed) and space vampires (Samara). Jacob's loyalty mission is to find his father, whose ship had sent out a distress beacon ten years after it went down. Those ten years were spent eliminating the male members of the group and breaking down the women to serve as sex slaves. One resolution to this mission is to allow Ronald to be left to the zombies who are now trying to kill him. Among your team are gang leaders, killer MechaMooks, assassins, intergalactic thieves and AxCrazy [[PsychoForHire Psychos for Hire]], and every one of them approves this fate.
* ReassignmentBackfire:
** Miranda is explicitly assigned to the ''Normandy'' to keep an eye on Shepard and represent Cerberus interests, [[spoiler: if you complete her loyalty mission, take her into the final battle, and choose to blow up the Collector base, she pretty much flips the Illusive Man off when he orders her to stop Shepard]].
--> '''Illusive Man:''' Miranda! Don't let Shepard blow up the base!\\
'''Miranda:''' Or what? You're gonna replace me next?\\
'''Illusive Man:''' I gave you an order, Miranda!\\
'''Miranda:''' I noticed. Consider this my resignation.
* RecruitingTheCriminal: Most everyone you recruit for your squad are either outright psychopaths (Jack), assassins (Thane), mercenaries (Zaeed), thieves (Kasumi) or otherwise operate at least a few degrees outside the law (Samara). Then the ones who work directly with Cerberus (Miranda, Jacob and other crew members) are working for a shady organization with unclear goals. Outside that some have questionable pasts (Mordin) or are just dangerous to have around (Grunt, Legion). The only people who have given you no reason to mistrust them are Joker, Garrus and Tali.
* RecurringRiff: The soundtrack reuses a certain cello solo throughout. For reference, it appears from 4:16 to 4:26 in [[http://www.youtube.com/watch?v=rN4sXqnHZoI "Tali"]]. Judging by the songs it appears in (including "Tali", [[http://www.youtube.com/watch?v=k2qCmmYifg8 "Jack"]], "Humans Are Disappearing", "Horizon", "Suicide Mission", "The Illusive Man") it may be a {{leitmotif}} for loss or grief.
** An interlude in "Tali" includes the main melody of the song "Uncharted Worlds" from the first game, set in a different key. [[note]]"Uncharted Worlds" is in G minor; the middle part of "Tali" plays this with two measures in B minor, one in E minor, and one in F# minor. After this, the riff plays four times faster.[[/note]]
* RecycledSoundtrack: [[https://www.youtube.com/watch?v=dcn3b3p4Vi0 "Going Out" by John Morgan]], the track that plays in the club Dark Star, is exactly the same as a track that can play in hub areas of [[{{SSX}} SSX 3]], a game made by EA Sports BIG in '03. [[CrowningMusicOfAwesome Which isn't a bad thing, given the music of the SSX series.]]
* RecursiveAmmo: Zaeed's Inferno Grenades from the free DLC (that the PlayerCharacter can equip with Advanced Training research), use this to great effect, often knocking people over even if they have shielding. Upgrading this power, will [[MoreDakka increase the number of sub-munitions]].
* RedShirt: In the opening, there is a crewman on the ''Normandy'' identified only as "Ensign." [[spoiler: She dies]].
* RedShirtArmy:
** The (non-Tali) quarians tend to fare poorly in the battles you observe.
** Averted with Kal'Reegar, who really is wearing a red shirt and yet does quite well (just how well he does is actually up to you.)
* RedundantResearcher: Remember Chorban from [[VideoGame/MassEffect1 the first game]]? You get an email from him saying there's something fishy with the keepers. [[NowYouTellMe Really?]] But his [[http://masseffect.wikia.com/wiki/Chorban#Mass_Effect_2 email]] contains conclusive proof of the [[EternalRecurrence extinction cycle]], yet he [[CassandraTruth has just as much luck as Shepard getting people to look at it.]]
* ReligiousAndMythologicalThemeNaming:
** The FENRIS, LOKI, and YMIR brands of defense mechs. FENRIS mechs resemble dogs (a side character even addresses them as literal "dogs" instead of mechs). YMIR mechs are [[HumongousMecha huge]]. LOKI mechs don't seem to fit their name at first until you realize that, of all the mech types, they ''by far'' cause the most trouble (often by malfunctioning or being hacked). There's also Cerberus itself; as noted elsewhere, it's a reference to the Greco-Roman Kerberos, the three-headed dog that guarded the gates of Hades.
** [[Literature/TheBible The biblical references]] throughout the game:
*** Miranda's loyalty mission is called "The Prodigal", a parable from the Bible.
*** Legion is named after a passage in Mark: "My name is Legion, for we are many."
*** Legion's loyalty mission is called "A House Divided", from a passage from Luke.
*** Legion reveals Sovereign's real name to have been Nazara, aka Nazareth.
* RenegadeSplinterFaction: It's revealed that the [[spoiler: geth]] the player was fighting in [[VideoGame/MassEffect1 the first game]] to be [[spoiler: a bunch of heretics that differs from the mainstream geth]].
* RescueIntroduction: Archangel (a re-introduction, as it turns out), Jack, Grunt.
* TheReveal:
** Collectors are [[spoiler:Protheans, although the process of repurposing them really makes them Prothean in name only; there is nothing left of the people they once were in the Collectors]].
** Sovereign's name [[spoiler:is actually Nazara, as revealed by Legion. Sovereign was a name given by Saren]].
** The Reapers [[spoiler:commit mass-genocide in order to ''reproduce.'' There isn't quite enough information on this to give definite details, but a Reaper 'fetus' bears a striking resemblance to the species it is made from. Since the ending briefly shows the dormant Reaper fleet and they ''all'' look like Sovereign, as well as the human Reaper being nowhere near as large as a completed Reaper, even if it had been fully formed, the current theory is that the species-specific construct becomes the "core" of a finished Reaper]]. ''VideoGame/MassEffect3'' reveals that [[spoiler:this is far more complicated]].
** The Shadow Broker's identity is revealed in the ''Lair of the Shadow Broker'' {{DLC}}. [[spoiler:He's a yahg, an eight-eyed, sharp-toothed, pre-spaceflight race of highly aggressive brutes, larger in size than the krogan and on par with salarian intelligence. The previous Broker got one as a "pet," but ended up being usurped by the yahg after he grew smart enough. He wields the Revenant one-handed and a large energy shield in battle, and can be viewed [[http://masseffect.wikia.com/wiki/Shadow_Broker#Mass_Effect_2 here]]]].
* {{Retcon}}: A handful show up.
** If you blow Conrad Verner off with a Renegade option in the first game, a news report will state that he died while trying to stop a crime, but he's alive and well no matter what. Additionally, regardless of if you used Charm or Intimidate to get Conrad to back off in the first game, the game assumes that you took the Renegade option, with Conrad claiming you "shoved a gun in [his] face." This is due to a bug in the save file transfer system.
* TheReptilians: The krogan and the drell.
* RoaringRampageOfRescue: Shepard gets to go on several including Archangel and Tali's recruitment missions, Miranda's loyalty mission and of course for the crew of the ''Normandy'' should they choose to.
* RobotsEnslavingRobots: More or less the function of the heretic virus in Legion's loyalty mission. Though, interestingly, it's used not just to show what {{Jerkass}}es the heretic geth are, but also pose the central [[HeelFaceBrainwashing moral dilemma of the mission.]]
* RomanceSidequest: There are several romance subplots: [[MsFanservice Miranda]] [[DefrostingIceQueen Lawson]], [[DarkActionGirl Jack/Subject]] [[MindOverMatter Zero]], [[WrenchWench Tali]]'[[CovertPervert Zorah]] [[spoiler:vas Normandy]], and [[HeroesWantRedheads Kelly Chambers]] for males, and [[MrFanservice Jacob]] [[NiceGuy Taylor]], [[TroubledButCute Thane]] [[TheWoobie Krios]], [[MemeticBadass Garrus]] [[EvenTheGuysWantHim Vakarian]], and [[BiTheWay Kelly]] [[SexySecretary Chambers]] for females.
** With the ''Lair of the Shadow Broker'' DLC, Shepard (male and female) can reconcile with Liara and pick the relationship back up, if she was romanced in the first game.
* ARoundOfDrinksForTheHouse: During Samara's loyalty mission where you're attempting to get Morinth's attention, Shepard can buy drinks for all of Afterlife's patrons. The bartender warns you that there are a lot of patrons there that night and gives you the option of weaseling out. With enough Paragon points, Shepard can convince the bartender to do this instead.
* RousingSpeech: Played straight and still awesome when Shepard gives a quick speech to their team in the briefing room before entering [[spoiler:the Collector base]], and near the end of the mission, [[spoiler:right before facing the humanoid Reaper]].
* RuleOfSymbolism:
** Shepard dies and comes back to life. Shepard goes to Afterlife (which has a distinct [[FireAndBrimstoneHell flame motif]]) to recruit Archangel. At the end of the game, assuming you got everyone through the SuicideMission intact and you have all the DLC squad members, Shepard has twelve squad members.
** [[spoiler:Legion]]'s name comes from Literature/TheBible, and the CosmeticAward for completing his loyalty mission is called "A House Divided", which also comes from the Bible - "A house divided against itself cannot stand."
** After going to the Afterlife, one of the first recruitment missions takes you to ''Purgatory'' (the prison ship). Later on Illium, you go to a bar called Eternity.
** Some of the interactions with squadmates in their respective places on the ''Normandy'' have this, particularly the potential love interests. Between Miranda and a male Shepard, for example, the setting of Shepard's conversations with her start from him standing, then sitting in front of her desk, later sitting beside her on a sofa, to her sitting on her bed. The change in setting corresponds with how their relationship develops.
* RunningGag:
** "... a division of [[MegaCorp Elkoss Combine]]".
** The turian at the C-Sec front desk. "You humans are all racist!"
** [[{{Foreshadowing}} "You ever hear of a krogan scientist?"]]
* SacrificialLion: Poor, poor ''Normandy SR-1.''
* SadisticChoice: In an optional mission, Shepard must fight their way through a military base captured by batarian extremists to activate self-destruct mechanisms on a couple of nukes heading towards a nearby colony. Once you get there, however, you learn you can only destroy ''one'' of the missiles and must choose whether to spare the urban area where most of the colonists live, or a vital industrial area that would, if destroyed, result in the eventual economic death of the colony and the evacuation of those same people that you just saved.
* SapientShip: [[spoiler:The ''Normandy'' itself becomes one of these]] near the end of the game [[spoiler:after EDI's shackles are removed and she takes complete control of the ship]].
* SavedForTheSequel: The quarians are worried over a remote star dying far faster than it ought to be. Tali hypothesizes it's due to dark energy affecting the interior of the star, but remarks that no race has the ability or any particular motive to destroy one. Nevertheless, she voices concern over the possibility of an adversary powerful enough to take a star out. The explanation is left open for ''VideoGame/MassEffect3''.
** If Shepard runs into Gianna Parasini on Illium and asks about her future plans, she'll remark: "A lot of people are suddenly interested in dark energy. My bosses want to know if it's something to worry about."
** See AbortedArc [[MassEffect2/{{TropesA-F}} here]] for what eventually became of this plot point.
* ScavengerWorld: [[DeathWorld Tuchanka]] is revealed to be largely this in the second game. Since most krogan can't get their act together to establish a system of government, off-world trade is right out. Most tech is either brought from off-world by unusually high-minded individuals, stolen from other clans, or salvaged from some of the many wrecks and various other detritus that dots the landscape. This is one of the many things that the head of Clan Urdnot is trying to turn around.
* SceneryGorn: The Normandy [=SR-1=] getting torn apart by the Collector cruiser. [[PlayerPunch Punches the Player in the gut. Hard.]]
** In the ''Arrival'' DLC, [[spoiler: the very graphic destruction of a ''Mass Relay'']].
* SceneryPorn: Planet Aite of the ''Overlord'' DLC. Even the Hammerhead VI points it out: "Geologic formations suggest an aesthetically pleasing view nearby. Organic lifeforms may wish to take note."
** Really, this game is full of them. The sets and places that Shepard visits look so gorgeous. Illium and Omega are two brilliant examples.
* SchmuckBait: Tali really should have known better than to tell Shepard not to ask about the name "''[[FailOSuckyname vas Qwib-Qwib]]''". What did she expect to happen? Actually, it ''is'' up to the player whether or not to ask about it.
** [[LampshadeHanging Lampshaded]] by Shepard in the ''Overlord'' DLC: "Get ready. I wouldn't be surprised if this button summons a Reaper."
* SchrodingersGun: This makes a triumphant return, where no matter how the first game ended (specifically the fate of the Council), Miranda will crow that Shepard did everything ''exactly right'', and specify how so. "And still it's not enough."
** Khalisah Al'Jilani from the first game will criticize Shepard regardless of their decision in the end battle.
* [[SchrodingersQuestion Schrödinger's Question]]: Was originally going to be used in for new games in which ''VideoGame/MassEffect1'' saves weren't imported, but was scrapped at the last minute. However, one of these questions survives in the final release -- the one asking whether Udina or Anderson became the human representative to the Citadel. This is because the auto-save which is imported into ''[=ME2=]'' is created by ''Mass Effect'' ''before'' the conversation when the choice is made occurs, specifically before facing Saren.
* SeanConneryIsAboutToShootYou: DLC squadmate Kasumi does this during the LockAndLoadMontage in her loyalty mission.
* SelfDeprecation:
** The devs make many, many jabs at themselves during the game, ranging from subtle comments on the appearance of characters to a random merchant making pointed comments that come very close to breaking the fourth wall. The following comments are from the ''Lair of the Shadow Broker'' DLC:
--->'''Shepard''': [[ContinuityNod Remember when you could just slap omni-gel on everything?]]\\
'''Liara''': That security upgrade made a lot of people unhappy!
** If you crash several times in the ChaseScene, this happens:
--->'''Shepard''': You okay?\\
'''Liara''': Still better than the Mako.
** Mordin remarks that being in the STG was a lot like being a Spectre, except better because at least ''they'' didn't have to pay for their equipment out of their own pockets.
* SequelDifficultySpike: Sort of. The game isn't really any harder than the first, for the most part. However, the redesigned combat mechanics mean that fighting like you did in the first game is a good way of getting yourself totally slaughtered, even on the easiest difficulty setting. Once you get used to the new mechanics (or if you're coming in fresh without having played the first game), the difficulty rapidly evens out. However, the change in mechanics and the streamlining of the character building process means that you'll never be able to throw yourself into combat without worrying about tactics like you could eventually do in the first game. So it's less about the game getting harder, and more that it doesn't get easier as much.
* SequelEscalation: The first game was somewhat extreme. But BioWare seemed utterly determined to outdo themselves for the second.
* SequelHook: The ''Arrival'' DLC sets up [[spoiler:the basis for Shepard being in prison at the beginning of the third game]]. For a non-DLC variant, the BolivianArmyCliffhanger counts as well (the glimpse of an armada of Reapers headed for the galaxy.)
* SequenceBreaking:
** A collision detection bug (the type which normally results in the game becoming [[UnwinnableByMistake unwinnable]]) on Omega allows you to enter Afterlife's VIP area and complete Samara's loyalty mission before Samara's recruitment mission ever becomes available. A similar bug on the ''Normandy'' lets you enter the tech lab to research upgrades before recruiting Mordin, although since his recruitment mission is available as soon as you gain control of the ''Normandy'', there's not much point to using it.
** A rare example of this trope letting you complete a portion of the game ''later'' than intended. It is possible to complete Mordin's loyalty mission after the suicide mission. That isn't this trope; nearly every non-story mission can be completed [[PlayableEpilogue after the "end" of the game]]. What ''is'' this trope is the fact that you can complete Mordin's loyalty mission ''even if Mordin is dead''.
* SerendipityWritesThePlot: Many characters, especially [[spoiler: Legion]], have dialog for missions that happen long before you are able to recruit them. It's speculated that the game was originally much more open when it came to recruiting people and the space limitations of the Xbox 360's DVD drive forced BioWare to break things up.
* ServiceSectorStereotypes: Most games, the barman is the local repository for news and gossip, right? Apparently, in ''Franchise/MassEffect'', that is the function of the news kiosk. The Dark Star barman on the Citadel just serves drinks. [[LampshadeHanging Humans are always making that mistake.]]
** Not just the news kiosk. In the prequel comic book ''Redemption'' there's a blink-and-you'll-miss-it reference to this when an elcor Liara is trying to get information from sarcastically asks if she thinks he's the bar's information minister.
* SexyDiscretionShot: Unlike the first game, you don't really get to see much of the sex scene that results from a romance, via a combination of fade to black and these.
* ShapedLikeItself: Used by the extremely high biotic god Niftu Cal, whom you encounter in Samara's recruitment mission. "I am a great wind that shall sweep everything before me like a... a great wind!"
* ShellShockSilence: Briefly; when Shepard experiences a near-hit from an explosive device, the sound goes fuzzy and muted for a few seconds. But only a few seconds, still nowhere near long enough to avert SteelEardrums.
** If you stand (in cover) too close to a YMIR Mech when it explodes, the ShellShockSilence can last until the end of the mission.
* SherlockScan: When you first encounter Mordin, if you don't choose to immediately reveal the group you're working for, he deduces it on his own in a matter of seconds.
* ShipSinking: Shepard has three opportunities in the ''Lair of the Shadow Broker'' DLC to ask about the nature of Liara and Feron's relationship. The answer all three times is that it's strictly platonic.
* ShockAndAwe: The entire point of the [[LightningGun Arc Projector]] DLC heavy weapon. Also, the Overload tech power and Disruptor Ammo.
* ShootTheHostage: An option for both the player character and some [=NPCs=] in missions.
* ShortRangeShotgun: Played straight for most shotguns. Averted somewhat by the DLC Eviscerator, which doesn't suffer as steep a damage falloff, but still scatters just as much as the others. Averted mostly by the recent DLC Geth Plasma Shotgun. Its most damaging pulse fires fairly dead center, but the other two shots it fires are off axis. But for the ones that don't avert it? You can aim straight at an enemy three meters away and have ''[[ATeamFiring all eight projectiles miss]]''.
** More like 'Short Range Firearms' in general. Yes, shotguns have an effective range of ~10 meters, and this is unrealistic. Meanwhile, assault rifles have an effective range of ~25 meters, and sniper rifles around 100 meters...and these are also unrealistic. In real life, assault rifles have listed effective ranges in the hundreds of meters, and many sniper rifles can hit targets a kilometer or more away.
*** However, this is less a fault of the game itself than a fault of the terrain design: Shepard's team never fights long-distance.
* ShoutOut: See ShoutOut.MassEffect.
* ShowWithinAShow: Type 4. When you return to civilized space, one of the things you can learn is that the first game is being made into a movie entitled ''Citadel''. More amusingly, there is ''Blasto: The Jellyfish Stings'', a movie about a ''hanar'' Spectre.
* ShutUpHannibal:
** A gameplay feature allows players to dynamically and instantly alter (or end) conversations at some points. This can range from just telling the person to shut up, or tossing him out a window.
** The Paragon ending. [[spoiler: The Illusive Man calls up to give you hell about destroying the Collector base. You can either reason with him or basically tell him to shut up and fall in line]].
** Even DLC squadmate [[TheMeanBrit Zaeed]] invokes this upon himself when he attempts to justify leaving civilians to burn so he can exact his revenge. Strangely enough, only Paragon Shepard cuts him off, and how successful it is depends on how Paragon he is.
* SidequestSidestory: The game has you tracking back the source of infected mech [=VIs=] in order to prevent further outbreaks, and the Blue Suns quest line in which you shut down a piracy operation.
* SigilSpam: Cerberus is ''really'' fond of their logo.
* SkeleBot9000: [[spoiler:The Human Reaper]].
* SlaveLiberation: There's a {{sidequest}} on Illium (where slavery--ahem, ''[[InsistentTerminology indentured servitude]]'' is legal) in which a slave broker asks Shepard to convince a representative from Synthetic Insights to hire a quarian slave. It's possible, with enough Paragon/Renegade points, to convince either the SI representative or the slave broker to free her instead (and, in the case of the SI rep, to hire her as a waged worker).
* SmugSnake: Jedore, the one making use of Okeer's rejected krogan as live-fire training for the Blue Suns.
* SniperPistol: Taken very literally with the new heavy pistol provided by the [[ExactlyWhatItSaysOnTheTin Firepower Pack]] {{DLC}}. Rather than the cross-hair "area" of most other weapons, the M-5 Phalanx gets a laser sight, and your shots will ''always'' hit where you're pointing the laser. On the other hand, it has higher recoil than the M-6 Carnifex HandCannon, meaning your aim will be disrupted significantly with each round. And your target staggering with each hit from the pistol doesn't help either.
* SoLongAndThanksForAllTheGear: Averted in the SuicideMission, where characters can die, but they don't have any gear they can take into the grave.
* SpaceClothes: The ESRB rating describes generally the events of Shepard's romances, one of which involves "unzip[ping] a future-blouse." They're not generally silly enough to qualify as SpaceClothes, being about as different from modern clothes as modern clothes are from 19th century clothes. It's more an aversion of NoNewFashionsInTheFuture.
* SpaceIsNoisy: Averted at the beginning, when you take a walk through the bridge of the ''Normandy'', which has had most of its top blown off. Otherwise played painfully straight.
** ''VideoGame/MassEffect3'' reveals that sound in space is a result of sound emulation software: it's not noisy, it just appears that way because that's what people expect, and set up systems to allow them to "hear" what's going on in space.
* SpaceNomads: The quarians.
* SpaceX: The [[ShoutOut Space]] [[BaldursGate Hamster]] Shepard can buy.
** According to the ESRB, Miranda wears a Space Blouse, which ''can'' be removed.
* SpoofAesop: One of DLC squadmate Zaeed Massani's {{Noodle Incident}}s:
--> '''Zaeed:''' You smoke, Shepard? Don't. That stuff'll kill you. Knew a kid once, half your age. Smoked too close to a cache of explosives. Tossed a butt, blew himself sky-high.
* {{Squee}}: If you saved the Council in the first game, the turian salesman at Rodam Expeditions is awfully eager to be talking to Shepard; he even says he'll name his firstborn after them.
* SquishyWizard: Biotic and tech characters tend to be fragile, except for Sentinel Shepard (who is really durable on the robust grounds of Tech Armour); Mordin is a particular example, given [[spoiler:that he's very fragile when holding the line during the Suicide Mission]]. Rule one of surviving as an Engineer is that when fire is coming towards you, you need to disappear almost as quickly as your shields do.
* StalkingMission: Thane, being an assassin, has Shepard participate in this during his loyalty mission. Somewhat subverted, though, [[spoiler:since the target you're stalking is not Thane's, but someone else's]].
* StandardFemaleGrabArea: During Samara's loyalty mission this is how Shepard [[spoiler: decides whether to tip the match in Samara or Morinth's favor]]; that is, if Shepard was able to resist the mind control before their confrontation.
* StarshipLuxurious: Despite being a combat-ready ship, the ''Normandy SR-2'' has quite a few luxuries on board. Like lots of space. And leather seats. But not decent food. (You ''can'' remedy that last part, if you want.) Joker himself is very excited about the fact it has leather seats.
** Getting the "Kasumi - Stolen Memory" DLC adds a bar in Kasumi's quarters.
* StaringDownCthulhu: Not exactly Cthulhu, but Shepard manages to intimidate a full-grown Krogan patron just by looking him in the eye. Unarmed.
* StayInTheKitchen: A quick one from a batarian Blue Suns mercenary to a Female Shepard, telling pointing her to the strippers' quarters. A little strange for two reasons, one being that Shepard is decked in full armor and she is also armed to the teeth, and the second is that there are a good number of women in the Blue Suns.
** However, if Shepard doesn't take the Renegade interrupt (and so does nothing), the merc's comment suggests he was baiting her to see how she'd respond. Either way, he treats her with no more or less respect than he does Male Shepard after that.
* StrayShotsStrikeNothing: Defied. The Gunnery Chief delivers [[http://www.youtube.com/watch?v=sCoHT_cHPzY an epic rant against careless firing of the mass accelerator]] for this very reason.
--> '''Gunnery Chief:''' I dare to assume you jackasses know that space is empty! Once you fire this, it keeps going till it hits something. That could be a ship, or the planet behind that ship. It could go off into deep space and hit someone else after ten thousand years! If you pull the trigger on this, you are ruining someone's day, somewhere and some time!
* StealthBasedMission: The first part of the ''Arrival'' DLC has an optional stealth component. Being stealthy isn't required to clear the mission, and the combat you engage in if you go gung-ho isn't that difficult, but you get an [[CosmeticAward achievement/trophy]] for completing the area undetected.
* StealthPun: Zaal'Koris vas Qwib-Qwib states not all quarians can serve aboard ships with great names such as the "Defrahnz" or "Iktomi." It would be ''very'' embarrassing for English-speaking humans to have the last name of "[[http://en.wikipedia.org/wiki/Vas_deferens vas Defrahnz]]" or "[[http://en.wikipedia.org/wiki/Vasectomy vas Iktomi]]."
** Illium, a world run by corporate interests that exists for the sole purpose of commerce and trade, has a news network which goes by the initials [[http://en.wikipedia.org/wiki/Federal_Reserve_System F.E.D.]]
* SticksToTheBack: Most egregiously, that big, chunky, awkward-looking Collector beam gun.
* {{Stock Puzzle}}s[=/=]{{Stock Video Game Puzzle}}s: A logic grid puzzle as a part of Liara's quest in the sequel. There are five persons - turian, salarian, etc., and five jobs: merchant, killer, observer, etc. If you saw one logic grid puzzle, you saw 'em all. You need to find out who is the Shadow Broker's assistant, the Observer. The correct answer is [[spoiler:[[SubvertedTrope none of the above]], because ''all five are male'', and Observer referred to herself as a female once. The whole thing is fake, and the Observer is actually her secretary]].
** An insultingly easy LightAndMirrorsPuzzle is part of one sidequest.
*** Another part of this quest is a SetPiecePuzzle where Shepard must use three computers in an order that will open all of a series of doors.
** The scanning minigame, Liara's terminal hacking sidequest, and part of Kasumi's loyalty mission are implementations of the MetalDetectorPuzzle.
** The ''Overlord'' DLC has two {{Set Piece Puzzle}}s--one involving moving giant tiles so you can get to the other side of a flooded room and another involving using several controls in order to summon a broken elevator.
* StockScream: You really have to feel sorry for poor Wilhelm. He can't even get a proper factory job without Zaeed trying to come and blow it up.
* StormingTheCastle:
** Going through the Omega-4 Relay to assault the Collector Base, arguably the whole point of the plot.
** When Shepard and [[spoiler:Liara]] go to [[DeathWorld Hagalaz]] to confront [[spoiler:the Shadow Broker]].
* StoryOverwrite: The game does a good job of porting most of your decisions from the first game via save file, but bugs wipe a few results (most notably the resolution to the Conrad Verner sidequest). Nothing majorly important, fortunately.
* StrawHypocrite: The Illusive Man and Khalisah Al'Jilani, as you can find out at the end of the ''Lair of the Shadow Broker'' DLC. Despite their pro-human views, [[spoiler:TIM hires alien prostitutes and the reporter has an asari girlfriend]].
** The former is used as evidence by many players that [[spoiler:TIM is being serious when he says he isn't anti-alien. He may want to put humanity on top, but that doesn't necessarily imply throwing the other races down. Except IN BED]].
* StuffBlowingUp: ''Mass Effect 2'' features exponentially more explosions than [[VideoGame/MassEffect1 its predecessor]]. And you can cause more than your fair share of them as well.
* StylisticSuck: Blasto, the first Hanar Spectre. Enkindle this!
* SuddenSequelDeathSyndrome: [[LateArrivalSpoiler Shepard]], along with a large number of the first ''Normandy'''s crew members.
* SuicideMission: The aptly-named "Suicide Mission", of course.
** The [[spoiler:Garrus]] recruitment mission has you pretending to join a joint effort by all the rival mercenary companies on the planet Omega to kill "Archangel", a master marksman who has interfered with one operation too many. The only problem is that he has barricaded himself inside a house and blocked off all entrances other than the long, open bridge leading to his front door. Your job? Draw his fire while the mercenaries finish tunneling into his basement.
-->'''Zaeed''': That's goddamn suicide!\\
'''Mercenary Recruiter''': [[LampshadeHanging Pretty much.]] [[BecauseYouCanCope You look like you can handle it, though.]]
* SwirlyEnergyThingy: [[spoiler:The Collector base is close to one of these. Given that the base is at the center of the galaxy, the object is most likely the supermassive black hole [[http://en.wikipedia.org/wiki/Sagittarius_A* Sagittarius A* ]].]]
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The rest of this list can be found at:
* MassEffect2/{{Tropes A-F}}
* MassEffect2/{{Tropes G-M}}
* MassEffect2/{{Tropes T-Z}}
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