3D Maze Man

3D Maze Man is a 1998 computer game.
Conceptually, it is influenced by Namco's popular arcade classic Pac-Man in that the main character (Maze Man) is a yellow sphere with a triangular mouth whose goal is to collect all the pellets in the current level and avoid the enemy ghosts. Like in Pac-Man, there are pellets which allow Maze Man to, for a short period of time ("Party Time"), eat the enemy ghosts, who regenerate from a specified location. Aesthetically, however, the 3D format of the game allows for a number of other features which differentiate it from Pac-Man. It provides for the ability to jump (also seen in Pac-Mania), enabling 3D Maze Man to avoid the ghosts when not in "Party Time". Also, the navigable platforms can span multiple altitudes, allowing for sloped or "elevator" platforms. In addition, some levels include colored keys which unlock certain correspondingly colored bricks, green spaces which prevent Maze Man from jumping, and red spaces which kill Maze Man on impact.

Source: Wikipedia, "3D Maze Man: Amazing Adventures", available under the CC-BY-SA License.