Gex: Enter the Gecko, released as Gex 64: Enter the Gecko on the Nintendo 64, is a 1998 platforming game that was used as a recurring joke in The Dark Age of Nintendo.
It has since been continuously referenced by Jeb Jab, ultimately become a major part of his identity in the series.
In The Dark Age of Nintendo[]
The game appears as a recurring joke in the series, being used by Scott Wozniak to get Rex Mohs and Jeb Jab to play low-rated 2015 Nintendo games with him.
In the final episode of The Dark Age of Nintendo, a copy of Gex: Enter the Gecko is used to defeat The Anti-Gex.