Mission Asteroid
Videos
Mission Asteroid is a graphic adventure game for the Apple II written by Ken and Roberta Williams and released in 1980 by On-Line Systems.
Re-release cover art
Advertisement from the June 1981 issue of The On-Line Letter for some of On-Line Systems' Hi-Res Adventure games, including Mission Asteroid
Mystery House
Videos
Mystery House is an adventure game released by On-Line Systems on May 5, 1980. It was designed, written and illustrated by Roberta Williams, and programmed by Ken Williams for the Apple II. Mystery Ho
1982 re-release cover art
Apple IIGS running Mystery House