Two player game! Cat= WASD. Mouse= ARROW KEYS. Black orbs are mouse holes that the mouse can use to make a hasty escape. If a mouse clicks space while touching blue orbs, the mouse hides it from the cat and it later respawns somewhere else. If the cat gets it, however, it will have a laser that moves across the screen. This laser can kill the mouse.
I got the idea from a friend. His username is stu18fz go check him out.