[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/pokemon_diamond_pearl_4848.jpg]]
[[caption-width-right:350:In the fabric of time and space...comes a new adventure.]]

->''"Welcome to the next generation of Pokémon! As a rookie Pokémon Trainer, you will need to catch, train and battle Pokémon on your journey to become the Pokémon League Champion. You will face many challenges along the way, as you search for the Pokémon that rules time or space..."''
-->-- '''Blurb''' on the back of the boxes of ''Pokémon Diamond and Pearl Versions''

The fourth generation of ''Franchise/{{Pokemon}}'' games, ''Diamond and Pearl'' hit the NintendoDS in 2006. Taking place in Sinnoh, the Pokémon world version of the Japanese island of Hokkaido, the plot is familiar territory for the series: [[HelloInsertNameHere you]], a child from the modest little village of Twinleaf Town, and your [[TheRival hyperactive best friend]], have a fateful encounter with Professor Rowan, the local authority on Pokémon, and his well-meaning but inexperienced assistant. Said encounter leaves you both with your first [[{{Mon}} Pokémon]], so naturally you set out ToBeAMaster, collecting monsters and badges and challenging/defeating opposing Trainers along the way.

At some point you also encounter Team Galactic, a group that claims to be researching new forms of energy, but isn't above [[CardCarryingVillain unabashedly illegal acts in broad daylight]]... what exactly are their goals? As the PlayerCharacter, naturally your hero's on a crash course to find out...

A [[RuleOfThree third version]], titled ''[[UpdatedRerelease Platinum]]'', came out a couple years down the line. ''Platinum'' tweaked the storyline a bit, adding more characters, remodeling several Gyms, and naturally including new challenges for players.

Not to be confused with seasons 10 through 13 of the ''{{Anime/Pokemon}}'' anime[[note]]''Pokémon: Diamond and Pearl''; ''Pokémon: Diamond and Pearl: Battle Dimension''; ''Pokémon: Diamond and Pearl: Galactic Battles''; and ''Pokémon: Diamond and Pearl: Sinnoh League Victors''[[/note]], but Pokémon from this era do show up in the show. For the bootleg under the name ''"Pokemon Diamond"'', see ''VideoGame/{{Telefang}}''.

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!!Tropes used in ''Diamond'', ''Pearl'' and ''Platinum'':

* OneHundredAndEight: Diamond version's Pokedex description of Spiritomb is "A Pokémon that was formed by 108 spirits. It is bound to a fissure in an Odd Keystone." Its Regional Pokedex number is 108, too.
* AntiFrustrationFeatures:
** From these games and onward, your BagOfHolding now has a limit of 999 copies of each item instead of 99. There is a space for every item in the game, so there's no risk of your bag filling up unless you actually get at least a thousand of an item, causing the overflow to take over another item's slot. No longer will you have to put items in your PC.
** If you knock out a Legendary, it will return to the place you encounter it after beating the Pokémon League again.
* AdultFear: A post-game encounter in ''Platinum'' with an elderly man who laments that he knew his grandson was living in an emotionally unhealthy home (whether it was abusive or just that severely neglectful is left to speculation), but didn't do anything to help until it was already too late to save him. It's heavily implied that his grandson is Cyrus, the BigBad of the game. Imagine living with the guilt of knowing you could have prevented that and ''didn't''.
* ApatheticCitizens: Downplayed. Most people said that Team Galactic was "up to no good". A lot of them probably didn't realize the scale of their mission, since the worst they did in public was steal a Pokémon from a kid. In Platinum, it does seem that the government is at least trying to do something by sending a detective/secret agent on their trails. Inverted in that most of Team Galactic's own members had no idea what they were actually doing and would have probably freaked out if they had known.
* ArtificialBrilliance: Enemy trainers tend to give their Pokémon moves that can cope with their weaknesses. And yes, they ''will'' use it on ''you''.
* AwesomeButImpractical: Any Rampardos using Head Smash. Head Smash is a powerful move, goes well with Rampardos sky high attack, and comes with STAB damage. However, half the damage done is dealt back to the user as recoil, and with Rampardos being such a GlassCannon, you won't be able to use it more than once.
* BigBoosHaunt: Lost Tower on Route 209 is the typical "resting place" type dungeon, but there is also the Old Chateau in the middle of Eterna Forest.
* BlackoutBasement: This time the only place you need Flash is Wayward Cave, which is why it was demoted to a TM.
* BonusBoss:
** Getting a win streak of 20 in the Battle Frontier facilities (50 in the Battle Hall) lets you fight that facility's Frontier Brain. Getting a streak of 49 (170 in the Battle Hall) lets you fight them again with a different team. In ''Diamond and Pearl'' only Tower Tycoon Palmer can be fought since the Battle Tower is the only facility available in those games.
** In ''Platinum'', there is an area called the Battleground in the Survival Area where you can rematch all of the Gym Leaders with new teams and fight the {{Guest Star Party Member}}s you've encountered.
* {{Bowdlerise}}:
** The P.I. Trainers are Gamblers in Japan; pay attention to how they talk about chance and how they are flipping a coin in their sprite. Their resemblance to a detective was [[LuckyTranslation purely coincidental]].
** A literal translation of one of the myths you can read in the Canalave Library explicitly states that [[InterspeciesRomance people and Pokémon used to get married to each other]]. The localization changed it into a metaphor about "[eating] together at the same table" to imply equality, with no mention of marriage.
* BossInMookClothing:
** Hiker Alexander on Route 208. He only has one Pokémon, but it's a Level 40 Probopass with the moves Block, Thunder Wave, Sandstorm and Rock Slide. If you don't have a Fighting-type/Ground-type or a Mon equipped with a Fighting or Ground move, you'll have an extremely difficult battle on your hands due to its high bulk.
** There is the duo of Ace Trainers Dennis and Maya at the north entrance to Veilstone City. They use high-powered, high-level Pokémon for that point in the game (Gyarados and Driftblim in ''Diamond and Pearl'', Lickitung and Gligar in ''Platinum''). At this point, you'll only have two or three badges, and if you don't talk to them from the side and instead rush toward the city entrance, you have to battle both of them at once a Double Battle.
** Bronzor and Bronzong. Their Psychic/Steel-typing leaves them with only two weaknesses, Fire and Ground, and both of their abilities negate one of those weaknesses. If they have Heatproof they don't any extra damage from Fire, and if they have Levitate they are immune to Ground. Combined with their above-average bulk and access to several moves that inflict StandardStatusEffects, they can be a handful to take down.
* BreakoutCharacter: Lucario's popularity surged to the point where it essentially became the mascot of the Generation. It got a movie focusing on it, was included in ''VideoGame/SuperSmashBros'' as a playable character, and was even given a [[SuperMode Mega Evolution]] in ''VideoGame/PokemonXAndY''.
* BrokenBridge:
** Route 210 is blocked by a group of Psyduck, which you could've defeated easily, but instead you have to get a Secret Potion because they have headaches.
** A man next to route 222 won't let you pass because of a blackout in Sunyshore City until after you've beaten the BigBad. This one is at least ''slightly'' justified by the fact that not only did Volkner cause the blackout, it likely would have shut down his gym, meaning there would be little point in going to Sunyshore anyway.
** Random people block your way for no legitimate reason. Route 212 is blocked from the northern side, even after you've beaten Hearthome City's Gym, just to make you take a longer path. No badges, no special events, nothing.
** In ''Platinum'', a battle is blocking the entrance to Canalave City if you manage to Surf there before picking up the HM from Celestic Town.
** After you escape from the Distortion World in ''Platinum'', you're placed outside the entrance to Turnback Cave. Cynthia just happens to be standing in front of the entrance, and will remain standing there until you defeat her at the Pokémon League.
* BubblegloopSwamp: The Great Marsh, as well as some of Route 212.
* ButThouMust:
** When you get the Old Rod and Good Rods on Routes 218 and 209 respectively, the Fishermen will ask you if you need an explanation on how to use the rods. Even if you say no, they'll still blab on about them.
** When you get to the end of Iron Island and Riley offers you the Riolu egg, if you say no, he'll "insist". You have to say yes, even if you have a full party, in which case he'll wait until you come back with a free spot.
** In ''Platinum'', Cynthia will stop you from going to the bike shop unless you accept the Togepi egg.
** When you reach Stark Mountain for the first time you encounter Buck who asks you to patrol it for some suspicious activity. If you say "No" he will continue to ask you to patrol the mountain.
* CaptainObvious: Daisy the Psychic: she states that she will battle you when she catches you, and that she will reluctantly give you prize money when you beat her. Both of which you would know by you encounter her, especially since you've '''beaten the Pokemon League''' as she's on the island you can only reach via beating the game.
* CaptureTheFlag: A minigame in the Underground.
* CastFromHitPoints: The new Life Orb item boosts the power of the holder's attacks by 30%, but every successful hit costs the user 10% of their total HP.
* CharacterSelectForcing: There are only 2 Fire-type families in the region before the post-game, the Ponyta and Chimchar lines, one of which is a starter. This had to be known by [=GameFreak=], as they made one of the Elite Four a Fire-type user and only 2 of his Pokémon are actually Fire-type, and it doesn't actually include every Pokémon introduced in Generation IV. This was fixed in ''Platinum''.
* TheComputerIsACheatingBastard:
** The Team Galactic admins have Pokémon at levels way before they should be available-- Purrugly and Skuntank at level 17 or so when neither is supposed to evolve until its 30s.
** The Battle Hall in ''Platinum'' prevents the player from using Pokémon below Level 30, though this doesn't stop the AI from doing so.
* ConsoleCameo: This time both playable characters and Barry have a Wii in their room. Additionally a Wii is one of the items available as a decoration in the player's Underground Secret Bases, simply called a "game system".
* ConvenientWeaknessPlacement:
** If you're having trouble with Water-type Gym Leader Crasher Wake in Pastoria City, the nearby Great Marsh happens to have a decent selection of Grass-types you can use against him.
** The routes between Mt. Coronet and Snowpoint City contain a couple Fighting-types you can use for Ice-type Gym Leader Candice.
* CosmicHorrorReveal: Cyrus, the BigBad takes this UpToEleven by attempting to destroy and re-create the entire '''universe''' as he sees fit. He does this by imprisoning three legendary Pokemon (Azelf, Uxie, and Mesprit) in order to create an object called the "Red Chain" which he then uses to summon Dialga and Palkia (who happen to be the God of Time and God of Space respectively). Cyrus then attempts to use their power to bend reality and reshape the universe in his image. In ''Pokemon Platinum'', this causes Giratina (a ghostly dragon-god living in an alternate dimension) to become enraged and drags Cyrus into its world ([[EldritchLocation a bizarre realm where the laws of physics and so forth are far beyond human understanding. Appropriately, it's called the "Distortion World"]]). And, once again, it's up to the player to save the day.
* CuttingOffTheBranches: In ''[[VideoGame/PokemonBlackAndWhite Black and White]]'' Cynthia refers to Dawn/Lucas fighting Giratina, implying ''Platinum'' is the canonical game.
* DamageTyping: These games introduced the Physical[=/=]Special split, which determine this based off the individual move rather than the ElementalRockPaperScissors chart (i.e. previously all Water moves were Special but now some aren't).
* DarkerAndEdgier: The story is noticeably darker than previous entries in the series, with the BigBad being a manipulative psychopath aiming to ''destroy the universe'' and recreating it.
* DeathMountain: Mount Coronet which is by far the biggest and most complex dungeon in a Pokémon game. It is a very straightforward dungeon on your first time through, but the second and third times take you first to Sinnoh's icy northern area, then to Spear Pillar at the actual mountain top. There's also Stark Mountain in the postgame, through which you initially travel with Buck.
* DevelopersForesight:
** Arceus has data for a ???-type forme, despite said type being exclusive to one move and is impossible to access without hacking in a corresponding Plate.
** If you run away from Giratina when you're supposed to fight[=/=]catch it in the Distortion World in ''Platinum'', Cyrus will comment on it.
* DifficultySpike: The Elite Four and Champion are ''much'' harder compared to the eight Sinnoh Gym Leaders, due to a sizable level difference between them and the trainers in Victory Road which may leave your team under-leveled if you didn't do any LevelGrinding. ''Platinum'' fixes this somewhat by lowering their levels.
* DiscOneNuke:
** Starly, the standard early game bird ComMon, learns Wing Attack at a mere level 9. Wing Attack is a 60 base power move and Starly gets additional STAB damage from it. There is a good chance that an appropriately leveled Starly will be able to one-hit KO anything that doesn't resist it for a good ways into the game.
** In ''Platinum'', after getting the first badge and doing a little backtracking, it is possible to find a level 10 Golbat by using Rock Smash. (Zubat does not normally evolve into Golbat until level 22.) Golbat evolves to the insanely fast and strong Crobat at max happiness, meaning that the player could have the final form of a three-stage family by the time they reach the second Gym. Oh, and both of Crobat's types are super effective against said Gym.
* EldritchLocation: The Distortion World in Platinum where Giratina lives. It's clear that the area is not within the normal world, but within an alternate dimension where time does not flow and space does not expand. There are also a few points where the camera changes angles and the character is walking sideays or upside-down.
* EternalEngine: The Feugo Ironworks is a factory where Oreburgh's coal is refined into mechanical parts. As part of an optional sidequest, the player can visit Mr. Feugo who will reward with an item.
* EyesAlwaysShut: Uxie
* FantasyCounterpartCulture: Geographically, Sinnoh is a counterpart to Hokkaido, Japan.
* FirstTown: Twinleaf Town has the houses of the two playable characters and your rival, but Professor Rowan's Lab is found in the next town.
* ForcedTutorial: Annoying as always, but the really annoying part is that you can have already captured Pokémon by the time it is given and your tutorial giver ''makes no mention of it''.
* GameBreakingBug: ''Platinum'' only, and carried over to ''[=HeatGold=] and [=SoulSilver=]''; the [[http://bulbapedia.bulbagarden.net/wiki/Acid_rain Acid Rain glitch]] will cause every weather to activate at once if a Pokémon faints to [[YouWillNotEvadeMe Pursuit]] while attempting to switch out if a weather is in play during a PlayerVersusPlayer battle. If Castform or Cherrim are sent out after the glitch has been triggered they will constantly transform due to their abilities being weather-dependent and cause the battle to lock up, requiring a restart.
* GravityScrew: The Distortion World in ''Platinum'' has various sections where the gravity will shift.
* GuestStarPartyMember: There are 5 trainers you can team up with over the course of the game. They'll accompany you through the area you meet them up in, participating in Tag Battles with you against other trainers and RandomEncounters and healing your team after every battle. You can also team up with them in the Battle Tower (all games) and fight them in the Battleground (''Platinum'' only), but only if you've traveled with them to the end of their area.
* GuideDangIt:
** There's a trick to make the same {{Mon}} pop up repeatedly while using the Poké Radar and (eventually) increase the likelihood of a [[PaletteSwap Shiny]] appearing. Naturally, neither trick is alluded to anywhere in-game and isn't even mentioned in official guides.
** Getting Spiritomb involves several steps that the game never tells you about. You have to put the Odd Keystone in the Hallowed Tower at Route 209, talk with 32 other players in the Underground, and come back to the Hallowed Tower to find Spiritomb.
* IncrediblyLamePun:
** "As we skiers like to say, 'spur thing!'"
** Also, from a Birdkeeper with a Noctowl: "We'll show you 'owl' best!"
%%* InnBetweenTheWorlds: You know that one inn in Canalave with the worn-out sign and the perpetually locked door?
* InterspeciesRomance: In the Japanese version, one of the Sinnoh stories found in the Canalave Library says humans and Pokémon used to marry each other.
* InUniverseGameClock: Made use of the NintendoDS's internal clock in a similar manner to how the second generation of games used a clock built into the cartridge, and future DS games kept that feature.
* KubrickStare: Cyrus does this (to the 4th wall most likely) near the end of the intro to ''Platnium''.
* LoadsAndLoadsOfLoading:
** This set of games has small, but noticeable, wait times ''everywhere'', including 15 second save times. There's also considerable lag in battles between animations, even with the animations ''off''. Fixed in ''Platinum''.
** ''Diamond and Pearl'' may give you a message when you save that it's "saving a lot of data," which means it will take about three times as long to load. This caused by the Box System. If you catch a Pokémon and it's sent to the box, prepare to take a while to save. If you look at the Box System for one second and don't even bother ''touching'' anything, prepare to take a long while to save. If you go ''hours'' on your journey without bothering to mess with the Box System, you'll save in a few seconds. This is because doing anything with the boxes triggers a flag that causes the game to calculate the checksums of all boxed Pokémon data on the next save, to make sure nothing got corrupted. It's a good programming practice [[UpToEleven taken into overdrive]].
* LethalLavaLand: Stark Mountain in Platinum. Being an active volcano it has pools of lava and is home to the legendary Pokémon Heatran.
* LostForever: Pretty much anything involving Wi-Fi, since Nintendo had shut down Nintendo Wi-Fi Connection to replace it with the Nintendo Network ([[CaptainObvious which Diamond/Pearl/Platinum aren't compatible with]]).
* LostWoods: Eterna Forest is a natural maze with its thick trees. On your first visit you team up with a trainer named Cheryl and every battle is fought as a double battle.
* LuckBasedMission:
** If you want the TM for [[TakingYouWithMe Explosion]], you have to play the slots in the Game Corner. Not just to grind for enough coins, but to trigger TEN straight bonus rounds, and your chain can be broken simply due to bad luck.
** Super Contests, most of all the Acting Competition since bonus points are awarded based on how few other Pokémon choose the same judge. The Visual Competition, though primarily dependent on Poffin feeding, also depends on what theme you get since the opponents choose the same accessories every time (and which accessories correspond to which theme are [[GuideDangIt not always intuitive]]). The only part that isn't particularly luck-based is the Dance Competition, which can possibly make up for lost ground in the other two sections.
** The 5-Maid Knockout Exact-Turn Attack Challenge in ''Platinum'' pits you against a series of five Maids, all of whom have a single Clefairy. In order to beat the challenge, you have to defeat all five in a randomly-determined number of turns -- no more, no less. Sounds easy, right? Unfortunately, every single Clefairy has access to moves like [[NoSell Endure]] or Bounce that they can use to stall for time. Even with the most powerful party capable of single-handedly wiping the floor with the Elite Four, if your opponents use those moves often enough, you fail. Of course, your only reward for beating the challenge is another battle against someone who has a Blissey (though they shell out plenty of cash and you can steal a RareCandy from the Blissey, if you're so inclined).
* MagikarpPower: Combee starts off knowing three moves and its stats are lousy. Also its ability is only useful for producing VendorTrash. But if you can get your hands on an elusive female and raise her up to level 21, you'll have yourself a Vespiquen, a combination of a bee and a battleship with a touch of European royalty. Not only are her stats better, but she has a much wider variety of attacks to choose from and has three signature moves each revolving around controlling swarms of Combee and has good abilities to choose from.
* MascotMook: Dialga for ''Diamond'', Palkia for ''Pearl'', and Giratina for ''Platinum''.
%%* MindScrew: The Distortion World in ''Platinum''.
* MetalSlime: Beldum. It can only be found as a swarm Pokémon, meaning it can only be encountered for one day at a time after beating the game and it can potentially take weeks before a Beldum swarm shows up. Beldum has a catch rate on par with most legendaries, which means an extremely low likelihood of catching it even if it's at 1 HP and asleep/paralyzed. It also only appears in a route with a perpetual sandstorm that wittles down your Pokémon's HP unless it's a Steel, Rock, or Ground-type. If that's not all, Beldum's only move learned naturally is Take Down, which damages the user every time it's used. You can block Take Down with a Ghost-type, but there are no Ghost-types immune to sandstorm damage in those games, meaning you have to waste a turn healing every now and then. And if you don't catch it before it runs out of uses for Take Down, it can damage itself with [[DesperationAttack Struggle]]. It's worth it, though - Beldum eventually evolves into the extremely powerful [[InfinityMinusOneSword Metagross]].
* MythologyGag:
** Three Trainers from the ''Anime/PokemonJirachiWishmaker'' and ''Anime/PokemonDestinyDeoxys'' movies appear as Ace Trainers in the Battle Zone. Butler and Diane from movie 6 appear on Route 229, the two of them sharing four of the Pokémon Butler owned in the movie. Rebecca (named "Hitomi" in Japan) from movie 7 appears on Route 224 with her Metagross. The English translation team did not notice this EasterEgg however, as Butler and Diane are renamed "Felix" and "Dana", respectively, and Rebecca/Hitomi is renamed "Jamie" instead.
** ''Diamond and Pearl'' open up with a TV documentary about [[VideoGame/PokemonGoldAndSilver a sighting of a red Gyarados]].
** One of the guards in the houses connecting routes will complaining about his thirst. [[VideoGame/PokemonRedAndBlue Luckily, he's not on duty, so he can't stall your progress.]]
* {{Nerf}}:
** Hypnosis' accuracy was reduced to 60% in ''Platinum'' after ''Diamond and Pearl'' increased it to 70%.
** A quite cruel, but hilarious one happens to poor ol' Regigigas in Platinum. In Diamond and Pearl, this legendary is level 70, but in Platinum, the legendary is '''Level 1'''. That's right, the big Daddy of Golems starts with the level of an '''infant Pokemon'''.
* NeverRecycleABuilding: The Old Chateau was abandoned several decades ago (at least), yet still stands more or less untouched since it was vacated despite being literally on Eterna City's doorstep. This probably has something to do with the fact that it became overrun with Ghost Pokémon at some point.
* NiceJobFixingItVillain: The Galactic Grunt that guards the door to the Valley Windworks building has one moment that ruins his otherwise moment of [[GenreSavvy Genre Savviness]]. Retreating inside and locking the door would have been a great idea had he ''not'' stated another Grunt had a copy of the key...
* NoobCave: Oreburgh Gate. It is just a straightforward cave on the first visit with only two trainers. Of course the cave is deeper than that but HM's are needed to explore further.
* ObviousBeta: The battles take a long time even with the animations off and saving takes a while. This is despite the fact that the UsefulNotes/NintendoDS was ''much'' more powerful than the UsefulNotes/GameboyAdvance, so these games shouldn't have been that taxing on the newer system due to how simplistic they are in comparison to something like ''[[VideoGame/SuperMario64 Super Mario 64 DS]]''. Fixed by ''Platinum'', though.
* OldSaveBonus:
** [[http://bulbapedia.bulbagarden.net/wiki/Dual-slot_mode Dual-Slot Mode]] allows you to encounter Pokémon that normally don't show up in the wild (like Gengar) by having a copy of one of the Gen III games in the bottom slot of the DS. This only works when played on the original UsefulNotes/NintendoDS or DS Lite, since the DSi onward lacked the slot for [[UsefulNotes/GameboyAdvance Game Paks]].
** The Pal Park feature allow the player to transfer Pokémon from the third generation by inserting one of the games in the GBA slot.
** By completing [[VideoGame/PokemonStadium Pokémon Battle Revolution]], the player can receive a Pikachu that knows Surf via Mystery Gift.
* OlympusMons: These games take it to the logical conclusion by making the [[MascotMook Title Legendaries]] {{Physical God}}s with extreme reality-warping powers.
* PalmtreePanic: The Resort area counts as this because it is a beachside resort town.
* PortTown: Once again there are two, the industrialized Canalave City and the tourist-friendly Sunnyshore City.
* {{Rewrite}}: ''Platinum'' changes the circumstances of how you obtain your starter, possibly to avoid any FridgeLogic when you meet Looker. [[note]]In ''Diamond''/''Pearl'', you swipe your starter from Rowan's briefcase to defend yourself from a wild Starly attack, meaning you took them without permission; Rowan's comments afterward imply he only "gives" them to you because they've already imprinted on you and wouldn't work with anyone else anyway. ''Platinum'', by contrast, has him giving them to you directly.[[/note]]
* RottenEasterEgg: Both this and FridgeHorror. An Antidote (a medicine that heals the Poison status effect ) can be found in a garbage can in the Dining Room of the Old Chateau. The same building is also home to some human ghosts. The implications speak for themselves.
* SequelDifficultyDrop: The post-game battle facilities. Previously, you had to make sure that all your Pokémon were at the same level (the [=NPCs=]' levels would be the same as the strongest Pokémon in your team, similar to the ''Stadium'' games), and this level had to be above the base level for all [=NPCs=], 60. Now, you simply have to get them to at least Lv. 50, and the game will bring down any higher leveled Pokémon. The Frontier has been reduced from 7 facilities to 5, none of which have gimmicks anywhere near as frustrating as in ''Emerald'', like the Battle Palace shunning player input so the Pokémon can attack based on their Natures, or the Battle Pyramid's BlackoutBasement.
* SequelDifficultySpike: This is the point when [=NPCs=] really started taking advantage of [=TMs=], Tutor moves, and Egg moves. Combined with the highest level curve since Gen I (which had poor AI and generally restricted move pools to naturally learned moves), Gen IV proved to be quite the challenge.
* SequelHook: [[spoiler: Cyrus is never apprehended and is still somewhere in the Distortion World. His last lines to the player imply he'll try something again.]]
* SequenceBreaking: Once you get to Solaceon Town, you actually ''don't'' need to complete any of the towns or beat the Gym Leaders in them to progress further down the routes. The only areas blocked off here are Celestic Town[[note]]because of Psyduck[[/note]] and Sunyshore City[[note]]because of a blackout[[/note]]. So, if you ''really'' wanted to, you ''can'' circle around all the way back to Hearthome City. Granted, the only reason worth doing this would be to open a shortcut to the Pokemon Mansion, or if there's a Pokemon you just want/need ''that'' much that's only available on those routes, but it ''is'' a possibility.
* SharedFamilyQuirks: TheRival, like his father, is always in a hurry and always bumps into people.
* SheatheYourSword: An interesting variation. It is perfectly possible to move the plot forward in Platinum by defeating or capturing Giratina, but you can also simply refuse to fight it by running. The game, through Cyrus being astounded at simply choosing to not fight it making Giratina come to its senses, will acknowledge this decision.
* ShiftingSandLand: Route 228 is a desert route with a constantly raging sandstorm.
* ShoutOut
** There's a Trainer in the post-game part of Victory Road that wants to [[AustinPowers judo chop]] you.
** One of the Galatic Grunts makes a reference to Creator/{{Sony}}'s 2006 E3 presentation, specifically the "for massive damage" line.
** The lead translator was a Website/SomethingAwful regular, and decided to throw in a reference to a LetsPlay from the site. The female Interviewer that can be battled in the Jubilife TV station had her name was translated as "Roxy" since she uses a Wooper, after the player character from LetsPlay/{{Chorocojo}}'s run of ''Pokémon Crystal''.
** The area in which the most powerful Steel Pokémon is found is called [[ComicBook/IronMan Stark Mountain]].
** The Pokémon Rotom is clearly based on ''Pulseman'', and one possible translation of Team Galactic's name is "Galaxy Gang". And speaking of Pulseman, a bit of the Pulseman overworld music is used in the 2nd last part of the rival's (Barry's) battle theme.
** On Iron Island, there is a worker named Noel who says that he is [[{{Music/JohnLennon}} a working-class hero]].
%%** [[Series/DoctorWho Who]] does Looker remind you of?
* SlippySlideyIceWorld: Route 217 is covered in snow and plagued by a constant snowstorm. Snowpoint City is a snowy town, and the gym plays this straight with the typical sliding ice puzzles. The upper areas of Mt. Coronet's outdoor portion are also cold and snowy.
* SNKBoss: Cynthia has a powerful and well-rounded team, each member of which has a colorful assortment of move types to give a ''lot'' of super effective coverage between them.
* SpikesOfVillainy: Team Galactic buildings have big honking spikes sticking out from their sides. Even moreso in ''Platinum'' which makes them look more detailed and streamlined.
* SpritePolygonMix: The characters and some props are sprites while the buildings and overworld are 3D models.
* SuspiciouslySpecificDenial: The lady at the front desk of the Canalave Library, after the earthquake.
--> "It certainly wasn't me who screamed 'Gyaaah!!' or shouted 'Help meee!!' No really, that wasn't me screaming!"
* TempleOfDoom: The Solaceon Ruins. The player can encounter and catch Unown here and the more caught, the deeper into the ruins the player can go.
* ThirdOptionAdaptation:
** In ''Diamond'', Cyrus uses Dialga for his plans. In ''Pearl'', Cyrus uses Palkia. In ''Platinum'', he uses both until Giratina intervenes.
** In ''Diamond'', the statue in Eterna City is that of Dialga, in ''Pearl'' it is of Palkia. In ''Platinum'' the player character can't tell which one it is, [[TheUnReveal and the plaque on the statue has been torn off]].
* ThirdPersonPerson: Mira, one of the possible Trainers you can team up with during your journeys, will speak like this.
* TrailersAlwaysSpoil: ''All'' of Platinum's marketing was based around the Distortion World and Giratina's true form.
* {{Troll}}: A lady will trade her Haunter for a Medicham in Snowpoint City. [[SocializationBonus Expect a Gengar without having to buy another game/trading with friends?]] '''Too bad'''. Said Haunter holds an Everstone, so it will not evolve. Even the NPC is apathetic about it.
* UnsoundEffect: When visiting Dr. Footstep. instead of speaking, a few voiceless Pokémon will say, "Ssshhhnnn... ... Ssshhhnnn... ... Ssshhhnnn... ...", which is similar to the Japanese "sound effect" for silence.
* WhatMeasureIsANonCute: Only a handful of 'cute' Pokémon can play in Amity Square; about 11 in ''Diamond and Pearl'' and 20 in ''Platinum''. This is actually {{Lampshaded}} by an angry Trainer who complains about not being able to take his Gyarados or Steelix into the park.
* AWinnerIsYou: Quoted by a clown in Veilstone when he gives you the Coin Case.
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