a proprietary game engine of Rockstar Games, developed by the RAGE Technology Group division of Rockstar San Diego (formerly Angel Studios), based on the Angel Game Engine.

a free and open-source 3D production suite used for making real-time interactive content.

a type of video game engine remastering process whereby a new game engine is rewritten from scratch as a clone of the original with the ability to load the original game's data files such as music, textures, scripts, shaders, levels, and more.