alone and grossed $400 million within 24 hours of going on sale. Game engines Infinity Ward used an enhanced version of the id Tech 3 engine from Quake III Arena for the first Call of Duty in 2003. For Call of Duty 2, Infinity Ward heavily modified the engine, featuring more powerful visuals and DirectX 9 support, and was known internally as the "IW" game engine. The version that was used for Call of Duty 2 was designated as IW 2.0. Call of Duty 4: Modern Warfare runs on a highly upgraded version of the engine from Call of Duty 2 dubbed "IW 3.0", with features that include true world-dynamic lighting, HDR lighting effects, dynamic shadows and depth of field. The Call of Duty: Black Ops sub-series and the James Bond video game Quantum of Solace were developed by Treyarch using modified versions of Infinity Ward's engine. Call of Duty: Modern Warfare 2, uses an upgraded engine dubbed "IW 4.0", which is a generation more advanced than the engine used in Call of Duty 4: Modern Warfare. Call of Duty: Modern Warfare 3 uses IW 5.0 (MW3 Engine), an improved version of the IW 4.0 engine. Improvements on the engine allow better streaming technology which allows larger regions for the game while running at a minimum of 60 frames per second, improvements to the audio of the engine have also been made. Call of Duty: Ghosts features an upgraded next-generation version of the IW 5.0 seen in Call of Duty: Modern Warfare 3. IW 6.0 is compatible with next-gen systems such as Xbox One and PlayStation 4 so polygon counts, texture detail and overall graphical fidelity has been increased. IW 6.0 is also compatible with Microsoft Windows, Wii U, PS3 and Xbox 360. The IW 6.0 engine features technology from Pixar, SubD, which increases the level of detail of models as one gets closer to them. Mark Rubin has said about the HDR lighting "We used to paint it in and cover up the cracks, but now it's all real-time". Ghosts uses Iris Adjust tech which allows the player to experience from a person's point of view how their eyes would react to changes in lighting conditions realistically. Other features include new animation systems, fluid dynamics, interactive smoke, displacement mapping and dynamic multiplayer maps. Call of Duty: Infinite Warfare'''s IW 7.0 features weightlessness system, game physics improvement, improved AI and