So, I recently found out about this nifty little game via TotalBiscuit's facebook feed, it's a very addictive DOTA-estique RTS game in space. It's *free* with some limitations (paid version is about £10, the most notable limitation is not being able to level up the main player ships past Level 1 (there are 5 levels for each ship, each of which upgrades its stats and appearance). You can still however fully customise/upgrade your ships and crew with gear rewarded at the end of a game). It's very hard to explain what it is and why it's awesome without downloading it and experiencing it for yourself.
http://stellar-impact.com
http://stellar-impact.com