Mystery House was a game for the Apple II computer created in 1980 by Roberta and Ken Williams. Although it had no sound, no color (black-and-white), and no animations, it did have one feature that would make it part of computer gaming history -- graphics. Mystery House was the first computer game to ever contain graphics (70 simple 2D pictures drawn by Roberta Williams). Before then, all computer games were text-based. Due to its newfangled graphics, Mystery House quickly became a best-seller at a first-release price $24.95 US. It eventually sold more than 10,000 copies, which was a record-breaking phenomenon in 1980.

You encounter an old abandoned Victorian mansion filled with interesting rooms and seven people. Suddenly, you find yourself locked in with no other option than to explore. Almost immediately, terrible events start happening as you encounter dead bodies scattered throughout this mysterious mansion. You eventually come to a sickening realization that either you find the murderer or the murderer finds you ...