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''Digimon World DS'' is the localized name of a game in the ''Franchise/{{Digimon}}'' franchise that was released for the UsefulNotes/NintendoDS in 2006. In Japan, it was released as ''Digimon Story'', making it the first in the ''Story'' subseries.

The story follows your character, whose gender and name is yours to choose, who's heard rumors of strange creatures fighting one another and alongside humans. Curious, the player character goes to the school computer lab to do some investigating. Naturally, a portal to the Digital World opens, and our hero quickly winds up finding the [[TheFederation Tamer Union]] and becoming a Digimon Tamer.

As usual, you play a tamer who lands in the Digital World to discover it's under threat from evil. The game largely followed the format of ''VideoGame/DigimonWorld3'', but included a different battle style.

The game was followed by several sequels, including ''[[VideoGame/DigimonWorldDawnDusk Digimon World: Dawn and Dusk]]'' and ''VideoGame/DigimonStoryCyberSleuth''.

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!!Tropes:

* AwesomeButImpractical: There are a few Digimon which can only be obtained by beating a difficult optional boss or breeding a pair of super-strong Digimon. All of them have only one form on their Digivolution lines and therefore can only be strengthened by training if they reach level 99.
** The Digivolve Disk as well. While it's impressive in the first parts of the game when a Digimon becomes Mega and destroys everything with a special attack, it's not particularly useful against other opponents.
* BossRush: The final quest involves defeating six bosses, then all six of them in a row, before finally letting you fight the TrueFinalBoss. The last two bosses are '''FAR''' more difficult than the first four.
* CanonImmigrant: The game's sub-plot uses the central characters [[spoiler:and the BigBad and his underlings]] from ''Anime/DigimonDataSquad'', and the game uses the ''Savers'' Agumon.
%%* CompetitiveBalance: The three Digimon you can get at the start of the game, although they're not particularly balanced.
%%** JackOfAllStats: Koromon.
%%** MightyGlacier: Tsunomon.
%%** FragileSpeedster / SquishyWizard (depending on Digivolution): Tanemon.
* ContinuityNod: [[spoiler:Ancient Canyon is File Island, and Jijimon from ''Digimon World'' can be encountered on the island]].
* DegradedBoss: Generally, if you beat a boss which you can raise as a Digimon and return to the area you fought it, it can be fought as part of a random battle.
* DiscOneNuke: [=DotAgumon=] and [=DotFalcomon=], should you choose to obtain them. High-leveled upon scan, plus they have excellent moves and traits that can carry them to the endgame
** By playing the game normally and doing sidequests, you gain Tamer Points which can grants you various rewards upon reaching certain milestones when speaking with a NPC in the main hub. One of these rewards is 100% scan code for Dorimon. Dorimon starts out fairly average, but it has ''absurdly'' [[MagikarpPower high stat growths even as a In-Training level monster]], and its high growths carries over to its evolutions. What's more is that you can get Dorimon within the first hour of gameplay, as it is obtainable as soon as you complete the mandatory sidequest from Calumon. All you need to do is complete the three ''Anime/DigimonDataSquad'' sidequests given by your Digimon on the farm. Train it up and evolve it a few times, and watch as its stats quickly eclipse everyone else in your party; even the other Mons you've also had from the very beginning of the game, ''even the aforementioned [=DotAgumon=] and [=DotFalcomon=] that you can also get at the start of the game''. The only downside to this is that by default, the only Evolution line alvailable for Dorimon without degenerating is Dorumon, which requires massive amount of Beast EXP for that point in the game, and Aruraumon which can't evolve further forcing Dorimon to get stuck in Rookie level until the option to Degenerate are unlocked.
** Goburimon is alvailable to scan in the very first area of the game. Goburimon have a high base attack stats, and is an Attacker type which give it massive attack growth. Furthermore, evolving into the Ogremon path gives it a sizable attack increase. It have an extremely low level requirement to evolve, being able to reach Champion at 7 and Ultimate at 16, and low base level upon evolving which gave it an easy time to get more stats by triggering their level up growth rate. Goburimon can easilly overpower almost everything you met up to that point, and once the option to degenerate is unlocked, it can acces its fantastic Mega forms which includes powerhouse such as Piedmon and Metal Etemon.
* EasilyForgiven: [[spoiler: Cane randomly decides to go from being a bona fide JerkAss to an upstanding Tamer after the FinalBoss.]] This second chance seems as a ''little'' unfair, seeing as all of the other renegade Tamers [[spoiler: who didn't have the fact that they were brainwashed at the time to absolve their actions]] were sent back to the human world for good.
* {{Expy}}: The male version of the main character bears a striking resemblance to Ryo from the ''VideoGame/DigimonWonderSwanSeries''.
* FantasticRacism: There are some Digimon who detest the Tamer Union because it's comprised of humans and Digimon working together.
* GameplayAndStorySegregation: The player can only obtain a Machinedramon outside of Digiconverting it by Digivolving it from Megadramon. The one you encounter as a villain Digivolved from [=SkullGreymon=].
** Later in the game, Kain Digivolves a [=MegaKabuterimon=] into a [=GranKuwagamon=] (which should only Digivolve from Dinobeemon or Okuwamon), although that could be justified by how he did it.
** A few of the Digimon descriptions also don't add up, as they're adapted from other Digimon media. For example, in gameplay terms [=VenomMyotismon=] is a better fighter than [=MaloMyotismon=], whereas the descriptions claim the opposite.
* HeroicMime: Averted. Your character has lines and different expressions.
* InterfaceSpoiler: [[spoiler:Beelzemon]]'s defection isn't specifically mentioned, but the fact that one the requirements to Digivolve to him is 'Has befriended [[spoiler:Beelzemon]]' is a bit of a clue, despite the instruction generally not meaning literally befriending. If you didn't spot him on the Digivolution chart, the fact he only occupies one space on the battlefield whereas the other Digimon he fights with occupy two to four is a clue.
** While less blatant, taking a look at the chart reveals you'll need a key item to digivolve to [[spoiler: Antylamon]], making it clear that Digimon will be important to the story.
* ItBeganWithATwistOfFate: If your character had chosen to ignore the rumors about the "fighting monsters that are friends with humans" he or she (you can choose your character's gender) never would have been placed on the chain of events that would culminate in saving the Digital World from destruction.
* IWantThemAlive: Towards the end of the game, BigBad [[spoiler: Alphamon]] attempts to brainwash and kidnap the player character because [[spoiler: he needs a strong Tamer to control Chronomon.]]
* LightIsNotGood: [[spoiler:Alphamon is the BigBad]].
* MixAndMatchCritters: Kimeramon is made up of bits of various Digimon, including a character which isn't even in the game and an apparently [[FridgeHorror one-of-a-kind boss you fought in a previous part of the game]].
* MyGodWhatHaveIDone: [[spoiler: Alphamon]] is absolutely distraught when it seems like his rash actions have doomed the entire digital world.
* MythologyGag: [[spoiler: A Digimon needing a human to control the power of a legendary Digimon is very similar to the plot of Digimon V-Tamer 01, though things turned out very differently here.]]
** There's also the '''very''' random moment where Calumon's power is revealed towards the end of the game. This will have come as no surprise to fans who'd seen ''Anime/DigimonTamers'', but to anyone who hadn't will have been ''very'' confused by that plot point. But, seriously, there was '''NO''' foreshadowing ''whatsoever,'' which is surprising, seeing as the creators at least took the time to give us clues as to who all of the mystery characters were in the beginning of the series. The events of ''Tamers'' is the only thing that keeps the moment from being a straight-up AssPull. And MythologyGag aside, the appearance of the Savers and the claw-belt Agumon confirms that this universe shouldn't follow the same rules that Tamers does. So... Why?
* SealedEvilInACan: [[spoiler:Chronomon. He would have been SealedGoodInACan if not for Alphamon and Kain's involvement]].
* TrainingThePet: When the player is promoted to Silver Tamer, their task is to train a bratty Pagumon, who insists that he doesn't need a Tamer. When Pagumon unknowingly eats a toxic flower, the protagonist has to [[FindTheCure find a medicinal nut to cure him]]. Pagumon starts to trust them, and after getting Ellie a new Star Piece, Pagumon finds that GoodFeelsGood and decides to strive to be a better Digimon.
* UnexpectedKindness: When Pagumon eats a toxic flower, he becomes very ill. The player promises to [[FindTheCure find an Antidote Nut for him]], but since he believes that HumansAreBastards, he thinks that they're going to leave him to die. Once they give Pagumon the cure, he's quite surprised that a human would do this and he decides to be nice to them from now on.
* WakeUpCallBoss: [=SkullGreymon=] is likely the first challenging boss you'll fight in the game, due to his [[DamageSpongeBoss MASSIVE health bar]] and hard-hitting attacks.
* WarmUpBoss:
** Goburimon exists to teach the player how battles work, and can easily be taken out with the starter Digimon you just obtained (especially if you chose Tsunomon, who can potentially take him out in a single blow if you're lucky).
** Ogremon, the first true boss, is a step up from Goburimon and hits pretty hard, but has rather low health for a boss.
* WellIntentionedExtremist: [[spoiler:Alphamon]].
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