John D. Carmack is an American game programmer and the co-founder of id Software. Carmack was the lead programmer of the id computer games Wolfenstein 3D, Doom, Quake, their sequels and the Commander Keen series of games.
Though Carmack is best known for his innovations in 3D graphics, he is also a rocketry enthusiast and the founder and lead engineer of Armadillo Aerospace.
In October 2008, Armadillo Aerospace competed in a NASA contest known as the Lunar Lander Challenge, winning first place in the Level 1 competition along with $350,000. In September 2009 they completed Level 2 and were awarded $500,000.