Toonsylvania is a side-scrolling platform game based on the animated television series of the same name. In the game, Dr. Vic Frankenstein's assistant Igor has invented some useful apparel that goes awry when he tests it on Phil, resulting in disaster. Now it's up to Igor to clean things up before Frankenstein returns.
You play as Igor and work your way through 5 different worlds to collect parts of Phil. Along the way, you can collect inventions that improve your health and combat abilities. As Igor, you can punch enemies and throw skulls at them from a distance. The game features three secret levels that require an UBI key to be unlocked. One key is hidden within the game, while others can be obtained from other Ubi Soft titles for the Game Boy Color.