Gex 3D: Enter the Gecko is a 3D platform game where the player controls a gecko who has to navigate several levels, all of which are parodies on well-known TV shows and movies. Rez, the evil overlord of the television, is back into the Media Dimension, and the government asks the TV addict gecko, Gex , to defeat him once again.
The game's story revolves around Gex entering levels through TVs to collect remote controls and unlock more of the Media Dimension. The gameplay allows for non-linear progression, with multiple routes and goals on each level that can be replayed anytime after completion.