"Kill cockroaches!" is a simple game that players catch cockroaches by touch. Cockroaches come out from the hole of wall. There are 4 types of cockroaches which are normal cockroaches, big cockroaches, egg cockroaches, and young cockroaches. When level of difficulty is up, big mouse will come out! Whenever you miss a cockroach or mouse, the heart at the bottom of the screen will disappear one by one. If all of heart disappears, the game is over. You can check your whole ranking, too!