Mope.io (stylized as mope.io) is a "survival of the fittest" type .io game, where players play as an animal to evolve overtime. Players can make their way up the food chain by consuming certain types of food, or other players. Various biomes, with each having their own unique terrain, aid the leveling up process, but can affect different animals in different ways. Abilities and gameplay effects further pose a challenge to different species.