3-Demon is a 3D version of the once popular PacMan. You collect "Food Dots" and occasionly collect "Power Pills" which enable you to eat the roaming ghosts. You get points for collecting Food Dots and Eating Ghosts, once all food dots are eaten you are taken to the next level. There are also 9 difficulty levels which should provide you with a challenge. The game ran perfectly in Windows 98 so there is no need to go to DOS to play it or use MoSlow or other CPU slowing utils.
