PULSAR: Lost Colony
http://store.steampowered.com/app/252870/
So, thanks to Psykokow, many of us in the ED community, have got into playing this game.
It is a game where you are part of a 5-man crew of a ship. You go places around an artificial galaxy, fighting ships, drones and NPC's either in space or on a planet. You can get boarded or board other ships (provided your weapons officer doesn't kill you all while you're on the enemy ship

) ... and more.
If you're looking for top quality graphics, this isn't it. The game is an early access game still in development, and there are bugs in the game, but it's the interaction with your crew that makes this game fun. I'd say, joining others on Teamspeak, or a VOIP call is required for this game. While you *can* play it solo, it is really a multi-player game, and that is where it shines.
It is currently £18 on steam, and if you buy it and are looking for people to play it with, come onto the Lave Radio teamspeak and ask around.
If you've never played it before, I recommend being a weapons officer, as you only have to worry about shooting things. The next hardest role is the pilot, then science officer, engineer and finally the Captain.