Untrusted
Image source: screenshot of the game at untrustedgame.com
A free, open-source adventure game played in the browser. You help Dr. Eval escape a strange world level by level.
How you code
Each level is a JavaScript program that you can see and partly edit in a panel beside the map. Some lines are locked, but in the open parts you can change the rules, for example by moving walls, redefining what an object does or rewriting the game's own functions, until a path to the exit appears.
Details
Categories: World-hackers
Platforms: Browser
Cost: Free
Language: JavaScript
Account: not required
Open source (CC BY-NC-SA 3.0). Source code: https://github.com/AlexNisnevich/untrusted
Last verified: 2026-10-08