Exclusive to the 3DO version, in the level "The Project", there is a secret exit towards the bottom of the map with a Question Mark caption just before it reading:


Going through the secret exit will boot up a secret Breakout clone, where you control Gex shooting balls up towards isometric cubes. To catch the ball, it must hit Gex's head, or if it is too far away from his head, Gex can shoot his tongue out a short distance to catch it just before it lands. The game's second boss, The Flatulator, also appears in this minigame, and hitting him with the ball will allow Gex to shoot the ball higher, while propellors will occasionally appear to generate more cubes.

This game appears to be another small project that was repurposed into an Easter egg, although there are no known messages or credits that appear during it. It's unknown why this minigame was left out of other versions of the game.