Total war series:
Turn based strategy game that goes out on that you build up your country that you chosed to play as, then you fight other countries in a battle for the power, The battles can be automated but if you want you can chose to move around your own army and do tactics and all yo minimise the loses, same with boatbattles
there are some good mods to make the total war games more harder and all, I would recommend Rome total war 1 and Empire total war/Napoleon, those I like most. Medieval 2 is great to but didn't fall me in the taste
Men of war series:
WW2 strategy game, you play as german, UK, USA, Russia or Japan and fight different battle during WW2 theatre, fun game to play if you got a hour or two and are tired of your other games, you are in controll of the armies and move them around, strategy game but you don't build factories, houses and all that.
this got great mods that make it to WW1, Cold war, modern war, zombies etc and there is a editor to play around in so you can have fun all the time.
Counter-strike Global Offensive:
This has been one of the games I have been playing most, got some thousands hours in it. It is a FPS terrorist vs police game.