As the player explores the mansion, he discovers that there is a killer murdering each guest one by one. Soundstage on a british movie studio. John Hejduk's New England masque sets his unique vision of Multiple gender neutral, male & female characters. Mystery house game 1980 . Mystery house, on 48k diskette for the apple ii, becomes the first computer adventure game to combine text with graphics. The objective of the game is to figure out who the murderer is before the murderer finds the hero. While not directly part of the laura bow series, ideas from the game were reused in the colonel's bequest. The parser here is sensitive, and any command not recognized by the game results in a i don't know how to. A group of people have been invited to an old house. It is the player's task in this murder mystery to find out who the murderer is before the player is killed himself. Mystery house is an adventure computer game released in 1980 by roberta ...