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# Game engine

- **[Castle Game Engine](castle_game_engine.md)** (Pascal, LGPL-2.0, mature)
- **[DelverEngine](delverengine.md)** (Java, Custom, beta)
- **[DesktopAdventures](desktopadventures.md)** (C, LGPL-2.1, beta)
- **[erampage](erampage.md)** (C, GPL-2.0, beta, inactive since 2015)
- **[Flare](flare.md)** (C++, Java, GPL-3.0, mature)
- **[Free in the Dark (engine)](free_in_the_dark_engine.md)** (C, C++, GPL-2.0, beta)
- **[FreeSO](freeso.md)** (C#, MPL-2.0, beta)
- **[Grit Game Engine](grit_game_engine.md)** (C++, Python, MIT, beta)
- **[Open Game Engine](open_game_engine.md)** (C++, LGPL-2.1, beta, inactive since 2008)
- **[OpenMW](openmw.md)** (C++, GPL-3.0, mature)
- **[PainTown](paintown.md)** (C++, Java, Python, 3-clause BSD, mature)
- **[ScummVM](scummvm.md)** (C++, GPL-2.0, mature)
- **[TwinEngine](twinengine.md)** (C, GPL-2.0, mature, inactive since 2015)
- **[VASSAL Engine](vassal_engine.md)** (Java, LGPL-2.1, mature)