To add a new game, create a games/game_name.js :

The is a legacy browser add-on primarily known for providing "cheats" and automated trainers for popular web and Facebook games. While the official website and extension have largely become inactive or outdated as browser security and game platforms (like Flash) have evolved, Overview of leethax.net

The more Riley watched, the less it felt like code. The chain wasn’t just machines trading favors; it routed through human acts. A recovered photograph led to a reunion; a revealed draft stopped a hate campaign. The extension’s network became a lattice of small restorations and reckonings.

The project is largely and may not work with modern Firefox versions (Quantum+). However, old versions can still be found on GitHub or archive sites.

Even today, archived discussions about the extension provide a time capsule of Firefox’s pre-Quantum era—a time when a single developer could write an extension that fundamentally changed how you played web games.