Clean-room implementation of Half-Life 2 on the Quake 1 engine
Rad-Therapy II is an ambitious open-source project designed to port Valve Corporation's Half-Life 2 (2004) into the Quake engine ecosystem, specifically utilizing FTEQW and the Nuclide SDK. Although the game is not currently playable from start to finish, it supports various multiplayer modes like deathmatch. The project requires original assets from Half-Life 2 and Half-Life 2: Deathmatch to function lawfully. Technically, the repository manages game logic, GLSL shaders, and plugins necessary for the engine to interpret Source engine data files. Licensed under the ISC License, the project represents a significant intersection between the legacy QuakeWorld community and modern game asset reverse-engineering.