Michael Schiffer - is a video game writer. Michael Schiffer began his career in 2003 and has worked for companies such as Infinity Ward, Activison, Aspyr, Gray Matter Interactive, MediaQuest Holdings, Aspyr Media, Activision Blizzard, Exakt Entertainment and Additional work by:. Michael Schiffer's first game was Call of Duty which was released 17 years ago. Best Game Michael Schiffer contributed to was Call of Duty. Michael Schiffer's latest work is Call of Duty 2 which was released 16 years ago.