Michael Gummelt - is a video game designer. Michael Gummelt began his career in 1998 and has worked for companies such as Raven Software, Hyperion Entertainment, Contraband Entertainment, MacPlay, Loki Software, Activision Blizzard, Activison, Infinity Ward, Treyarch, Sledgehammer Games, Aspyr Media, Neversoft Entertainment, Aspyr, ak tronic Software & Services, Beenox, High Moon Studios, 1C-SoftClub, Sony Interactive Entertainment, Activision, Activision Value Publishing and Noviy Disk. Michael Gummelt's first game was Heretic 2 which was released 25 years ago. Best Game Michael Gummelt contributed to was Heretic 2. Michael Gummelt's latest work is Call of Duty: Black Ops Cold War which was released 3 years ago.