Worth mentioning here, again (I learned of it from someone in the Screeps thread a week ago) is the Brood War API project: https://code.google.com/p/bwapi/wiki

Worth mentioning here, again (I learned of it from someone in the Screeps thread a week ago) is the Brood War API project: https://code.google.com/p/bwapi/wiki https://code.google.com/p/bwapi/wiki http://bwapi.github.io http://bwapi.github.io It let you write C++ to define an AI to control the StarCraft units. Competitions used to be held. And of course making something similar for StarCraft 2 would be a harder project by an order of magnitude, as they discuss in the FAQ.