The game's original concept included an underground base that connected all of the levels, but this element was scrapped by publisher Psygnosis due to financial constraints. Several additional levels were also cut from the game due to time restrictions, including one inspired by "Prince of Persia" (1989). Following "Walker"s launch in February 1993, Dunlop began working on a port for the Mega Drive, which was cancelled shortly thereafter. Glancy was also recruited to work on a sequel, "Walker 2", which would have overhauled the visual quality of the first game and include a customisable mech. Planned for release on the 3DO Interactive Multiplayer, it was eventually cancelled.