Pokémon Fauna is a fan made Pokémon game currently in development using RPG Maker XP and Pokémon Essentials. The game is set in the region of Aseron, a land rich in biodiversity and home to many Pokémon species. Players will embark on a journey, capturing and training Pokémon, battling other trainers, uncovering the mysteries of the Aseron region and protecting all the species that inhabit it.

The game features Pokémon from Generations 1 to 9, with its own Pokédex; new mega evolutions and abilities. It also includes a mission system and bonds with various NPCs, where side stories will enrich the player's experience.