This engine can be used as a replacement for commercial or closed engines
Spring is an opensource 3D RTS engine with many games and highly customizable content.
We haven't had a commercial name for the game engine, but internally it's been called "Storm3D".
An open source reimplementation of the Rayman 2: The Great Escape engine using C++11 and modern OpenGL.
An open source clone of the Dungeon Keeper II game and engine.
Spearmint is a heavily modified version of the Quake III Arena engine.
Strife Veteran Edition GPL Source Release You need assets from the original game Strife: Veteran Edition.
OpenRW "Open ReWrite" is an un-official open source recreation of the classic Grand Theft Auto III game executable.
Jedi Knight II: Jedi Outcast (Single Player Linux Port).
OpenJK is an effort by the JACoders group to maintain and improve the game engines on which the Jedi Academy (JA) and Jedi Outcast...
Open source implementation of ALIVE engine that powers Oddworld Abes Oddysee and Oddworld Abes Exoddus.