Digimon World DS/Digimon
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Digimon World DS marks the first appearance of several Digimon, some that later appear in the Digimon Savers anime, like Gawappamon, the evolution of Kamemon. Chronomon Destroyer Mode/Chronomon Holy Mode, the game's final boss, also makes his first appearance.
The game introduces two special Digimon, DotAgumon and DotFalcomon, both of which have the appearance of sprites which look like their V-Pet (Tamagotchi like Virtual pet) counterparts. These Digimon seem to have no special qualities except for useful traits, and being able to be degenerated back into their In-Training forms, then evolve into more powerful Digimon.