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Unigine

Unigine Engine is a proprietary cross-platform middleware, developed by Unigine Corp. It is used as either a game engine or as an engine for VR systems. The middleware is aimed to the wide market, so there are various licenses of Unigine, including special ones for independent developers. Also operates on PS3 platform.

Pygame

Pygame

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