Pac-Rat is a funny Pac-Man variation in which you are a little brown rodent. Just like Pacman, your objective is to collect all the pips. There are three cats in the maze that will try to catch you. If you grab any of the four big cheeses in the level, you will temporarily hulk out, turn green and become invulnerable. In this state, you can attack the cats. They will return to their starting point at the center of the maze. Watch out though, because this booster won't last forever!