Playing some battlefleet gothic armada 2. The main campaign is bloody well great, probably the best w40k campaign ive played. Its like a sins of a solar empire map and turn based, you got sectors in a grand map and in each sector you have a dozen or so systems. Im on the third sector only and around turn 80 already. There is a main quest line, but give or take you got some 20 turns to do each mission (or you can outright disable the time limit). Outside of that you are free to do what you want. Even the construction on the planets, though simple, is rewarding and you gotta balance building ships or improving planets and defences.
Theres 3 campaigns, im yet on the first imperium one, the other two are as necrons and tyranids. And ive heard they plan to add a generic grand campaign total war style where you pick one of the 12 factions.
As the imperium i got fleets of the imperial navy, space marines and adeptus mechanicus. When creating a space marine fleet you can even choose the chapter, for example. My white scars, blood angels and imperial fists fleets have taken quite a toll on the many enemies.
You dont feel much secure though, i got half a dozen attacks in one turn, and i still havent sighted tyranids or orks (been fighting chaos eldar and necrons. In this campaign i think all show up later on but the tau). Thinking strategically to where to place your fleets, which systems to give up or defend, as your forces are pushed to the limit, is quite awesome.
And im not sure what it is exactly but ive had a lot more fun in the battles here than in the first game, though there is just two gamemodes for now.
All in all i hadnt this much fun in a sp strategy campaign in a new release since NTW probably.