Elon Musk is most famous these days for his electric car company Tesla, and for the spaceships he created with his private spaceflight company SpaceX. When the inventor was much younger, though, he tried his hand at creating video games.
At age 12, as a kid living in South Africa, Musk created Blastar — a space-themed PC game that is heavily influenced by classic arcade games such as Space Invaders and Asteroid, according to The Verge. You play the game as a space pilot who has to "destroy [the] alien freighter carrying deadly hydrogen bombs and status beam machines."
Musk sold the code for $500, and now you can play it here.