Rockstar Games
The Rockstar Advanced Game Engine (often abbreviated as RAGE) is a proprietary game engine developed by RAGE Technology Group, a division of Rockstar Games' Rockstar San Diego studio. Since its first game, "Rockstar Games Presents Table Tennis" in 2006, released for the Xbox 360 and Wii, the engine has been used by Rockstar Games' internal studios to develop advanced open world games for consoles and computers.