Digimon World: Evolution Apocalypse is a free, fan-made, non-profit Digimon simulator developed by OverBoot. Created for entertainment by fans, it is not affiliated with or endorsed by Bandai Namco, the owner of the Digimon intellectual property. The game offers multiplayer rooms for two to eight players, automatic matchmaking, tutorial and practice options, and competitive matches with rankings and season rewards.

Players can collect and develop Digimon, explore evolution paths through the DigiDex, and take part in features including a 100-floor tower, Digital Expedition for groups of one to four, a virtual pet mode, and gacha-style collection. The experience also includes player statistics, strategy guides, world chat, daily rewards, events, and regular balance updates and new Digimon additions. OverBoot provides a Discord community and a channel for feedback and bug reports.

Optional Ko-fi contributions support server and maintenance costs only; they do not unlock content or provide in-game benefits. The project asks players to support official Digimon products and respects the rights holders’ ownership of the franchise