Mark Simmons - is a video game producer. Mark Simmons began his career in 2005 and has worked for companies such as Freejam, Climax Group, 2K Games, Climax Studios, Konami and Climax UK. Mark Simmons's first game was Sudeki which was released 19 years ago. Best Game Mark Simmons contributed to was Robocraft. Mark Simmons's latest work is Robocraft which was released 10 years ago.