Grab the galactic imperium, spread your borders and defeat enemies so you rule the whole galaxy. Star Commander is very pleasant 4X surprise.
If you have ever played Master of Orion you will be on known place. This is all about gathering resources, building, creating army and defeating enemies. However, this free project makes further than you imagine. To control the ships you need crew and capable leaders as well. Welcome really rich technology tree, various sides and several planets with neutral units and bonus production. The whole fighting and strategy map is turned-based but take into account very slow beginning. When you get after 30+ turns the game starts rolling.