Gex 64
Gex 64 is a port of the Playstation game Gex:Enter The Gecko. The Nintendo 64 version was released in August 1998, a couple months after the Playstation version came out.
Gex 64 takes place a couple years after the original Gex. Rez has once again taken control of The Media Dimension which is fine by Gex; unfortunately the government's opinion on the issue differs and before you can say "3D platformer" send a couple goons out to Gex's door, who promply kidnap him and make him an offer he cannot refuse.(money) So gex hops back into the media dimension and is ready to kick some serious tail. As in the original comedian Dana Gould supplies the voice of Gex and makes several wisecracks during the game.
Both versions play a great deal like Mario 64. In both games you start out in a hub world (The Media Dimension) and you enter a world and collect certain items (Remotes) in order to unlock more levels. The N64 features one new level, not previously found in the Playstation version.