Nowadays, VR is welcomed by lots of developers, OEMs, and end users. People enjoy VR experience as they can be immersive in a virtual world. In that situation, physics plays an even more important role than before because it gives users a more real experience while in the virtual world. In that case, the physics provided by original games engines may not be enough. Developers need to developer together with game engines and professional physics engine. This whitepaper will show you how to develop with Unreal and bullet physics? Please refer to the attachments to reach full paper. https://software.intel.com/system/files/managed/89/d9/VR%20optimizations-4.pdf