I'm 1800hrs in (with probably another couple hundred making mods), Rimworld is pure crack in all the best ways possible. Hands down the best $30 I've ever spent on a game.
Definitely a great game. Recently had a pretty big update adding enemies and combat that has been fun so far but you can also just disable combat mode for a chill time building your swarms/spheres
Not on steam deck but I play it on Linux pc and ps5. One of the coolest things about it is cross save, you can save your game on pc or ps5 then continue from that same spot on the other platform.
Some things are a bit small and apart from cutscene camera angles or really zoomed in there isn't much detail visible on the characters. I played with kb/m inputs mapped to have better utilization of deck controls. Some low fps bits here and there but generally great.
I picked up GTA 4 , I was going to get rdr2 cyberpunk , hogwarts and sifu if they had hit the right price but I'll leave it for a future sale. I picked up the mass effect trilogy earlier this year for 9.99 now its cheaper. I also picked up a humble spaced out bundle too recently so I have tons to keep me busy.
Maybe this will be the actual sale I pull the trigger on Sonic Frontiers I said I wasn't going to spend any money on games for a while but I really sonic and they seemed to have nailed this one.