Universal Gamex was a video game manufacturer for the Atari 2600.
Only one game is credited to Universal Gamex: X-Man. It has nothing to do with the similarly named comic book, instead X-Man is a Pac-Man style game with an adult theme. Universal Gamex seems to have had some sort of relationship with Spectravision (Spectravideo in Europe), as they used Spectravision's cartridge casings and PCBs. Very little else is known about this company.