For backstory: My partner and I have been playing Super Mario Party so long that it’s gotten boring. They asked me what I wanted for my birthday (which is coming up), and I thought something like that would be cool. If X-COM 2 had a local co-op on the Switch, I’d do that, but is there something similar?
Some folks have pointed out X-Com is a turn based game, and I agree with the suggestions that fit that.
On the off chance you actually want a real time game, I’m a huge fan of the Kingdom series. The co-op one is called Kingdom Two Crowns. It’s an interesting take on real time strategy as it’s a 2d side scrolling game. You are managing a growing colony in a hostile land, and you have to build up your economy enough to construct a boat and sail to a new island. You end up having to double back to earlier islands as you unlock new tech, sometimes finding your village chugging along nicely, sometimes finding quite a grim scene in need of cleaning up.
It’s a very chill game for the most part, with some higher stress moments that are paced well imo. I personally love the art style and music.