Symphony of War: The Nephilim Saga

I'll say up front that it's a niche game and isn't for everyone. This is especially true because most of its aspects outside of the gameplay are pretty unremarkable. But if this is your thing, it's really your thing.

What makes it so special is that its core gameplay loop is a very satisfying meld of Fire Emblem and Ogre Battle - essentially a turn-based strategy RPG where you control semi-autonomous squads instead of individual characters. And if that description made you perk up just by reading it, you need to go buy this game ASAP.

Now, if that description didn't immediately pique your interest, I'd check out some gameplay videos instead. Because it fills such an obscure niche, it's actually hard to know if you'll like this game just from a brief description. There's a good chance you've never played anything like this, and it will scratch an itch you never knew you had.