Star Trek Online is free though, CMD.
And yes, I downloaded it from steam. Only played a little bit, but it's pretty neat. Ensign Nathan Scott Phillips fought some Borg off his ship, the USS Johannesburg, then proceeded to fight some Borg ships even though the ship only had a fore and aft phaser array and a single fore photon torpedo tube. Victory was his anyway. Then he beamed down to Vega colony. And I got tired and logged off