I have really been loving my steam deck lately. I've now played through Fallout 3, New Vegas, all of their respective DLCs, and am about 100hrs into 4 right now.
Normally I play indie games since that's where my interests are and I grow tired of the AAA jackassery.
I mention that to illustrate that I do use and live the deck. But I guess I'm not creative enough to use the back buttons at all. So to the title question:
What games do you play that make the most use of the back buttons?
When I'm going from my desktop to the deck I miss being able to do things like press I for inventory or M for map, things like that. So usually I set them up to replace those little shortcuts to get me though games that need me to flick about a few menus to get to them.