past each level, Bugs must collect all 8 carrots in each level. Characters There are four enemy characters - Sylvester, Daffy Duck, Wile E. Coyote and Yosemite Sam. However, the Sylvester character has three variations - two gray, one green and one pink, Daffy has two variations, one being dark gray and one brown, and Yosemite Sam being either in blue or brown. Gray Sylvester - can only travel up a floor or a tube; cannot bypass a door or tube without going through it; cannot go under staircases; cannot stop moving; two of this kind can be used in a single level. Green Sylvester - can travel both up and down a floor or tube; can bypass a door or tube without going through it; can go under staircases; cannot stop moving. Pink Sylvester - can only travel up a floor or a tube; cannot bypass a door or tube without going through it; cannot go under staircases; able to stop moving after a short distance travelled. Yosemite Sam / Wile E. Coyote - cannot go through doors or tubes; once they've traveled down a staircase, they cannot go back up; cannot stop moving. Daffy Duck - cannot go through doors or tubes; once he has traveled down a staircase, he cannot go back up; able to stop moving after a short distance travelled. Development The North American NES game is a modified version of the Japan-exclusive Family Computer Disk System title, Roger Rabbit. Roger Rabbit is the game's playable character, all the villains are Who Framed Roger Rabbit-related, and hearts are collected. Due to Capcom owning the rights to develop and publish Disney film-based video games, as well as LJN already having published Rare's own video game adaptation of the film, Kemco decided to use Bugs Bunny, due to he and Roger both being rabbits, making it easier for Kemco to modify the Roger Rabbit game and release it outside Japan as The Bugs Bunny Crazy Castle. For the Game Boy version, Kemco's license to develop and/or publish video games based on Who Framed Roger Rabbit became outdated; however, they still had the license to create Disney-based video games, which they used to create Mickey Mouse for Game Boy. An early beta version of the game shows the working title as Bugs Bunny Fun House. In 1997, Kemco released the Game Boy version along with The Bugs Bunny