Space Quest 1: Roger Wilco in the Sarien Encounter

Space Quest: Chapter I – The Sarien Encounter, commonly known as Space Quest I, is a graphic adventure game released in October 1986 by Sierra On-Line. It is the first game in the Space Quest series. It quickly became a hit, selling in excess of 100,000 copies. Total sales are believed to be around 200,000 to date, not including the many compilations it has been included in.
Space Quest was the brainchild of Sierra programmers Scott Murphy and Mark Crowe, who had worked on prior titles like King's Quest II, but had not designed their own game before. According to Murphy, "at that time (1985), everything at Sierra was so somber and had an almost medieval atmosphere. So we decided 'Why not make a fun, silly game?'"