CatMouse.io drops you into a battle between cats and mice. You need to pick a side then begin to fight against the enemies. There are plenty of foods dispersed around the map, you need to collect them, eat them as much as possible to grow your size. Work with your team to defeat the opposing team using your abilities and strategies while protecting yourself. Don’t forget to construct a large army full of mice or cats. Your goal here is to build the dominance in the entire arena.