Walton has been building games and managing game development for more than 35 years, with the last 20 years managing massively multiplayer online games. He has been VP of Online at Origin Systems, managing Ultima Online, VP and executive producer at Maxis, managing the Sims Online and VP and executive producer at Sony Online Entertainment for Star Wars Galaxies. Walton then went on to become the co-studio GM at BioWare Austin for Star Wars: The Old Republic and was most recently the VP and executive producer at Disney Playdom.

Walton has personally developed more than 35 games and overseen the development of more than 200 games.