Cockroach io is very unusual io game. You've got to choose first whether you're going to play for cockroaches or humans. And them mortal combat begins!
How to Play
Keep eating food till you reach score greater than 10. After that you can attack your enemies! Click to attack. Little by little your score will increase and when you reach a level of 20000 you've reached the score limit you are the Ghost of the Room! What does it mean? You're invisible to every player in the game, but you become visible when you attack someone or someone attacks you (ie while attacking someone else but you stay on the way). Opponents can't see you, but still can attack you.
As a Ghost you have some special powers:
Ghost attack: your attacks do no depend on score anymore, but have to recharge after use
Light Switch: switch the light of so no one (except you) sees anything, lasts for 5 seconds, then needs to recharge
Room Quake: available for human Ghosts only, shake the room and cause everyone to shake too till you stop it