Screeps: The MMO Sandbox Game for Programmers

I recently attended the wonderful Pioneers conference in Vienna (more interviews to follow) and among the many interviews I conducted was Artem Chivchalov, the Russian founder of Screeps, a massively multi-player online (MMO) game with something of a difference.
In most MMO games you choose a character with a variety of traits and set it loose into a world full of other human controlled characters and characters controlled by an artificial intelligence. In Screeps, there is something of both, but it’s up to the players to create it. Yes, you need to code your own characters to play.