Sins of a Solar Empire. I got the full version on Amazon about a year ago for £1.99, so it's probably even cheaper now. It's a really good game. You have 3 resources - Credits (which are farmed by colonizing planets) and metal and crystal, which are mined from asteroids (build a processor on the asteroid, they automatically extract metal and crystal). These 3 resources are used to build more structures (refineries which increase the output of your asteroid mines, trade hubs which link your solar systems together and generate credits through trade, propaganda stations which broadcast your culture to nearby systems and so on and so on), you use them to build new ships for combat and to research new technology.
It's basically Age of Empires in space and you really can't go wrong with it.
Slimy lying bastard +1 authority, -1 trustworthiness
Last edited by Dayve; 12-30-2013 at 12:47 PM.