Keith Schuler is one of Duke Nukem 3D's level creators. He designed one level for The Birth, Critical Mass and finshed Richard Bailey Gray level XXX-Stacy. He also was a lead designer and programmer on Paganitzu and Realms of Chaos. He was also a primary level creator for Shadow Warrior. He also was the project leader on the Duke Nukem Forever (Side-Scroller). He also worked on level design on Duke Nukem Forever at 3D Realms until sometime in 2007-2008. He now works at Gearbox Software where he worked on Brothers in Arms: Hell’s Highway and Borderlands before going back to work on Duke Nukem Forever again..