Haven’t seen a post like this recently so I thought I’d start the conversation !
I’m close to finishing Wario Land 3 (emulated GBC), which was the game of my childhood, I’m surprised of how tricky some levels are.
I also started playing The Eternal Cylinder but it’s quite a demanding game so I’m thinking of playing it on PC instead
Kingdom Come: Deliverance
Steam Deck related community reports how the game runs can be found here: https://www.protondb.com/app/379430?device=steamDeck (note you can change the displayed reports to being only Deck, PC or both).
Said it before and I’ll say it again - one of the most underrated games ever!