The battle between cats and mice is eternal, and it's played out for all to see in CatMouse.io. Choose to play as either cats or mice, and then eat your way to victory.
The more you eat, the bigger your gang of either cats or mice will become, spawning a wide variety of followers.
Steer with the mouse, and send your gang off to fight with the right click.
Know when to run. Damage of your flock is reflected by their visual appearance. If your cats or mice are bruised and battered and bandaged, run away to fight another day.