Grey Goo is a novel real-time strategy game that attempts to emulate the luster and wonder of the Command and Conquer series. With sloppy mechanics, a less-than-inspiring plot, and a mixed bag campaign, it falls short of this goal. Nevertheless, for those looking to play something other than StarCraft II, you may want to give it a try.
The Student StarCraft AI Tournament is a bit like poking a bear. First held in 2011, it tasks students of AI and computer science to submit bots for 1v1 StarCraft battles.