Mark H. DeForest - is a video game programmer. Mark H. DeForest began his career in 2005 and has worked for companies such as Cyan Worlds and Ubisoft Entertainment. Mark H. DeForest's first game was Myst V: End of Ages which was released 19 years ago. Best Game Mark H. DeForest contributed to was Myst V: End of Ages. Mark H. DeForest's latest work is Myst V: End of Ages which was released 19 years ago.