Rage is a first-person shooter video game developed by id software. it uses the company's opengl based id tech 5 engine. released in october 2011, the game was first shown as a tech demo on june 11, 2007 at the apple worldwide developers conference (wwdc), and was officially announced on august 2, 2007 at quakecon. on the same day, a trailer for the game was released by gametrailers. the game is set in a post-apocalyptic near future, following the impact of the asteroid 99942 apophis on earth.