ReimplementationPlays instantly

Mystery House

On-Line Systems · 1980 · Apple II · Adventure

About

Ken and Roberta Williams's first adventure, the first with pictures, public domain since 1987 as its own first screen says, on ScummVM's ADL engine with the Apple II disk streamed by the demo.

In the first graphic adventure game ever, the player along with seven other people is in an old mansion hunting for some jewels. All too soon it becomes obvious that someone is killing one member of the group after another. It is the player's task in this murder mystery to find out who the murderer is before the player is killed himself.

Description from IGDB.

How it runs

Project: ScummVMReimplementation. A new engine written from scratch that runs the original game's data.License: GPL-3.0About this project
Port: scummvm.kuendig.ioBy Christian Kündig · WebAssemblySource: chkuendig/scummvm-demo
Controls: The keyboard: G starts the game, I shows its instructions, and the game takes typed orders. Ctrl+F5 opens ScummVM's menu, to save and load.
Plays with: Keyboard and mouse.
You need: Nothing to bring: the port loads everything it needs.
Original: On-Line Systems, 1980, Apple II

Under the hood: every project behind it, its license and code, how they connect, and who made them.

On your device

Install

A build to download from the project and run on your device.

ScummVM
By scummvm2861 stars on its repository
Releases
Reimplementation
Latest release v2026.4.0, Oct 11, 2026Code last updated Oct 21, 2026License: GPL-3.0
How to play
1. Download ScummVM from its website and install it.
2. Make a folder for each game and copy into it the data files from your own original media.
3. Start ScummVM, choose Add game, select that folder (not the files inside it) and press Choose.
4. The Game Options dialog opens: the default settings are fine for now.
5. Select the game in the list and press Start; next time, start from there.
6. To add many games at once, click the small arrow on Add game and choose Mass Add: it searches every subfolder.
7. Its wiki lists the supported games, and its user documentation covers the rest.
Written by recomp.gg from its README, read Oct 12, 2026.

From SubmitGame's list, read Oct 21, 2026, with releases, stars and licenses as each project's repository gives them. recomp.gg wrote some projects' steps from their own pages, as each says; the others' are the same for every project of a kind, and its own page has the details.