EvoWorld.io is a survival .io game where you start as a tiny fly and power up as you devour more food. Other players become a part of your diet as you go.
Eat the green-outlined foods and animals. Animals with a red outline should be avoided since they will devour you! You'll be competing for survival against hundreds of other gamers, so stay active and eat often. Keep an eye on your water supply as well; you'll need sufficient to live.