Once upon a time (that is, in the early 1960s), if you wanted to play a game on a computer, your options were pretty limited. While a few experiments in game creation had been done on oscilloscopes and the like, the fact was, if you wanted a game to really put your fancy 200 kHz computer through its paces, you were going to have to punch the code for it into the paper tape yourself. So, in 1962, that’s exactly what a handful of M.I.T. students did, spending roughly 200 hours putting together Spacewar!, an epic, dramatic space opera featuring hours of cut scenes, performances by celebrity voice actors, and extensive social network integration, complete with in-app purchases.
Read more here: http://www.avclub.com/article/now-you-can-play-one-oldest-computer-games-your-br-204102