engine

LeakNet is a patch for the leaked Half-Life 2 beta build in 2003.

Engine

OpenGL code for virtual reality applications and computer graphics education

Open Source OpenGL C++ Engine

Mirrored from https://github.com/congard/algine

GPL-licensed HLSDK (reimplemented using the original Quake engine and manually rewritten sources)

Dark Web Search Engine : a dark net crawler and database viewer.

Gamebryo engine (Bethesda's branch) reimplementation https://www.moddb.com/engines/sugarbombengine

A stupid toy chess engine

[WIP] Experimental game engine written from scratch

Data driven game engine.