Roberta Williams, Co-founder, Sierra
Roberta Williams is an American video game designer, writer and a co-founder of Sierra On-Line. She is most famous for her pioneering work in the field of graphic adventure games with titles such as Mystery House, the King's Quest series, and Phantasmagoria. She is married to Ken Williams and retired from her career in 1999. Roberta Williams is considered one of the most influential PC game designers of the eighties and nineties, and has been credited with creating the graphic adventure genre.