Greg Nagan - is a video game writer. Greg Nagan began his career in 2006 and has worked for companies such as Square Enix, IO Interactive and Io-Interactive. Greg Nagan's first game was Hitman: Blood Money which was released 15 years ago. Best Game Greg Nagan contributed to was Hitman: Blood Money. Greg Nagan's latest work is Hitman: Absolution which was released 8 years ago.