Fredrik Zetterman - is a video game programmer. Fredrik Zetterman began his career in 2012 and has worked for companies such as Paradox Development Studio and Paradox Interactive. Fredrik Zetterman's first game was Crusader Kings II which was released 12 years ago. Best Game Fredrik Zetterman contributed to was Crusader Kings II. Fredrik Zetterman's latest work is Crusader Kings II which was released 12 years ago.