''Digimon Adventure 02: D-1 Tamers'' is a WonderSwan Color game based on the ''Franchise/{{Digimon}}'' franchise. It's the third title [[DigimonWonderSwanSeries in a miniseries of]] ''Digimon'' games for the console following Ryo Akiyama, and it's the one which gets to the point: how he dimension-hopped out of ''Anime/DigimonAdventure'' into ''Anime/DigimonTamers''.

Shortly after [[VideoGame/DigimonAdventure02TagTamers the previous game]], Ryo is visiting Ken during his illness. Ken prompts him to check his computer, which contains a strange quiz. After completing it, Ryo is dragged back into the Digital World, where he's informed that three of the [[TheFourGods Four Holy Beasts]] have turned evil and the fourth requires the help of a suitable Tamer to challenge its former comrades. To that end, it established the D-1 Tournament, a challenge pitting Chosen Children and Tamers against each other to determine who is able to assist the Holy Beast in battle. Ryo participates, but little does he know [[HeroicBSOD what truly waits at its end]]...

Gameplay is similar to its predecessor, but with some tweaks: combat is now turn-based three-on-three matches, with Jogress evolution being required to obtain strong Digimon.

!! ''VideoGame/{{Digimon Adventure 02 D-1 Tamers}}'' contains examples of:
* AllThereInTheManual: The third part of [[Synopsis/DigimonWonderSwanGames Ryo's story]]; this is the part which covers his actual act of [[CanonImmigrant canon immigration]]. It also ties into his massive demeanor shift between his appearances in the first two games and in ''Tamers''.
* ChickMagnet: There has to be a reason why [[Anime/DigimonAdventure Mimi]] invited Ryo on a date after the tournament.
* [[ChildSoldiers Child Soldier]]: Ryo is treated like this by the Chosen Children and the Four Holy Beasts.
* EarthShatteringKaboom: Strong enough to kick both Ryo and Millenniummon ''out of this dimension''.
* HeroicBSOD: This is how Ryo takes his treatment from the Holy Beasts.
* HijackedByGanon: Though really, given the whole game series is about fighting Millenniummon, this is hardly a surprise or a spoiler.
* InterfaceSpoiler: Whichever Holy beast is said to be corrupt is just defined by the answers you give in a questionnaire at the start of the game, tipping off the player that maybe there's something else behind the plot...
* OOCIsSeriousBusiness: See [[ChildSoldiers Child Soldier]] and SadisticChoice. The fact that the Chosen Children went along with the plot to put Ryo through serious TrainingFromHell can only be justified as a testament to just how outrageously powerful Millenniummon was.
* SadisticChoice: Ryo has to choose to sacrifice one of the Digimon that helped him take on the tournament.
* SequelHook
* TakingYouWithMe: Millenniummon, to Ryo.