Drakensang: The River of Time, any of the Spiderweb Software RPGs (especially the newer ones--Avernum or Avadon), The Last Remnant, and Expeditions: Viking or Expeditions Conquistador. Throw in Dead State if you're OK with hella jank in a game, as well.
Those are about the lowest-profile ones I can think of off-hand.
XCOM 2 would be my first recommendation, but XCOM: EU with its expansion isn't bad either. The sequel improves on a lot of stuff, but is different enough that playing the first game isn't a waste of tme or anything. Also, the modding community around both are great.
Like, I'm currently playing XCOM 2 with some mods and it's the most fun I've ever had in these games. It's sooo goood.
I was hyped for dead state for years but sadly the final product was not what I was expecting and it was pretty boring when I finally watched some gameplay footage