When the game was released in Europe, Gex's role was recast; instead of his usual actor Dana Gould, Gex was played by Danny John-Jules, most famous for his role as the Cat on the sitcom "Red Dwarf".

The music track for Blizzard Beach in Walt Disney World Quest: Magical Racing Tour was reused from the Holiday Broadcasting level from Gex 3: Deep Cover Gecko, with the Gex 3 motif being replaced with "Tis' the Season", and the minor key "Frosty the Snowman" segment replaced with a reprise of an earlier segment of the song.

In 2023, a previously undiscovered Easter egg was found in the secret level "The Abyssmal". However, while it is possible to activate this secret legitimately, the steps to do so are uncertain as to how many are really needed to activate it. In order to make it appear, Gex needs to whack all 6 pearls, whack all 7 mines in a specific order, whack every fish, whack the turret without activating it, and whack the target inside of the sunken ship. Another possible step is going inside of the ship's funnel, but it's still unknown if this is supposed to be an invisible trigger for something or if it's unnecessary for triggering the Easter egg. When all of these steps are completed, a spinning cube with pictures of three family members of the developers will appear on top of the Deep Sea Explorer. Destroying the cube will award you with a Star Token for the Vault.

A debug message can appear in response to scripting errors which states: "HANK IS FEEBLE MINDED!!"