Enter to enjoy playing CatMouse.io game without any charges at friv99.com. CatMouse.io is one for our amazing Friv 99 games to play and having fun. Try CatMouse.io game at no cost in friv99.com. We have the very best way to enjoy playing online. CatMouse.io is among our very best Friv 99 games.

Use Move Mouse button to Move, Use Left Mouse button to Attack, Use Right Mouse button to Speed Up, Use Enter button to Chat,

io..