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Grit Game Engine

The Grit Game Engine is an MIT-Licensed Open Source Game Engine that is highly scriptable via Lua. It supports huge open world maps and dynamically streams assets from disk. The Grit Game Engine is a community project to build a free game engine (and toolchain) for implementing open world 3D games, such as the those in the GTA series, Saints Row, Crysis, Fallout 3, Just Cause 2, Mafia 2, Burnout, etc. Anyone can use the engine as a foundation for their game, and anyone can read / modify / integrate the source code.

Unigine

Unigine

Unigine Engine is a proprietary cross-platform middleware, developed by Unigine Corp. It is used as either a game engine or as ...

Pygame

Pygame

Pygame is a set of Python modules designed for writing games. Pygame adds functionality on top of the excellent SDL library.