Rise: Battle Lines [Steam store page]
Bare-bones little game using the strategy elements you see in many hex turn-based games as almost a single-player puzzle. This part is short though, a couple hours, and probably just meant as training for the multiplayer component.

It's lacking any story, art, or variation that usually elevates this sort of single-player experience beyond rock-paper-scissors combat, and unfortunately the multiplayer doesn't have a useful number of players, so you'll have to bring your own friends if you want to try it.