Play as Mappy the police mouse to collect items that were stolen by Goro and his gang. Collect all of the stolen goods in the mansion to advance to the next round. If you come into contact with an enemy or fall into a pit, you'll lose a life. Once you lose all of your lives, the game is over. Extra lives will be awarded upon reaching certain point intervals. Jump on the trampolines to move up and down. Their color will change with each continuous bounce; if you jump on a red trampoline, it will break. Press the 1 Button or 2 Button to open or close a nearby door. Doors will open in the direction that the doorknob is facing. Open power doors to release an impact wave that'll knock any enemy in its path out of the mansion. The impact wave can only be fired once per power door.