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

An open-source GoldSrc engine clone (Clean authentic reimplementation without using reverse-engineered code)

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

Further adventures of OGS Engine in Modernland (Alternative way of GoldSrc engine evolution)

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

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

https://ochess.fr/

A little 2D/3D game engine not pretentious.

Basic engine components. Ecc, Core, Engine, Shaders and 3rd party dependences.

A stupid toy chess engine

Quake (id Tech 2) engine with forged internals

Quake 3 (id Tech 3) engine with forged internals

Valve's 2010 Game Ported to CSGO Engine

[WIP] Experimental game engine written from scratch

Data driven game engine.

Hopeless is a Winboard chess engine written in Pascal by Pawel Koziol.