“True Pacifist” route is worth doing if you enjoy Undertale, it’s not terribly difficult and fleshes out the characters a bit more. If you’re thinking about going the other way, I would say play up through Undyne and see how that feels.

I really want to like Outer Wilds, but it just hasn’t quite clicked with me either. I’ve probably played about 10 hours but just keep bouncing off of it.