X-Men: Gamesmaster's Legacy is an action game released in 1995 on the Sega Game Gear system. The game starts off with Cyclops and Storm as playable X-Men, although Wolverine, Gambit, Rogue, Bishop, Jean Grey, and Cable can be unlocked later on. It is loosely based on the Upstarts and X-Cutioner's Song storylines that took place in the comics. It is the sequel to the original X-Men Game Gear game.

The following year, Sega released a follow-up, X-Men: Mojo World.

The game is split up into two parts, with five stages in the first part where players rescue the missing X-Men, and three stages in the second part. The bosses include Trevor Fitzroy, Shinobi Shaw, Siena Blaze, Fabian Cortez, Exodus (all of whom are in the first part,) and Apocalypse, Mister Sinister, and Stryfe.

The character lineup for the game includes Cyclops, Storm, Wolverine, Gambit, Rogue, Bishop, Phoenix, and Cable (who is hidden in one of the Egyptian Base levels.)