UNIGINE is described as 'Unigine Engine is a proprietary cross-platform middleware, developed by Unigine. It is used as either a game engine or as an engine for VR systems' and is a Game Development Tool in the Development category. There are more than 10 alternatives to UNIGINE for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Android. The best alternative is Unity, which is free. Other great apps like UNIGINE are CRYENGINE (Free Personal), OGRE (Free, Open Source), Pygame (Free, Open Source) and Grit Game Engine (Free, Open Source).
OGRE (Object-Oriented Graphics Rendering Engine) is a scene-oriented, flexible 3D engine written in C++ designed to make it easier and more intuitive for developers to produce applications utilizing hardware-accelerated 3D graphics.
Pygame is a set of Python modules designed for writing video games. Pygame adds functionality on top of the excellent SDL library. This allows you to create fully featured games and multimedia programs in the python language.
batari Basic (bB) is a BASIC-like language for creating Atari 2600 games. It creates a binary file that can be run on an Atari 2600 emulator or the binary file may be used to make a cartridge that will operate on a real Atari 2600.