A F2P science fiction/space MMORTS is begiining beta testing.
If you're unfamiliar with Starjack, Limbo bills it as a "4X, real-time strategy, massively multiplayer game." What exactly is 4X? It stands for explore, expand, exploit, and exterminate, and you'll be able to do all these things in real-time (i.e., no turns) in a constantly changing persistent universe. Starjack is also unique in that nearly everything in the game is player-created, including ships, fleets, troops, colonies, and resources.