http://www.sinsofasolarempire.com
Basically, it's a 4X RTS game. Combining empire control and management with real-time combat and it's associated tactics. It's a LOT of fun to do so, as the way you play the game is both streamlined, well-paced and doesn't get counterintuitive in places so you'll always feel like you have complete control over what's going on.
I recommend checking it out


