Haven’t seen anyone mention https://overthewire.org/wargames/bandit/ yet. It’s a Linux shell game where you need to solve problems using shell commands that only requires an ssh client on your machine: you ssh into the first server, solve a problem, and the solution points you to the next server. It starts easy (e.g. read out this file using cat) but gets hard quickly. But you can always look up solutions when you’re stuck. It gives a good idea what certain commands are used for and how they can be combined in powerful ways.

Thomas was alone OST is superb.

I didn’t play it when it came out so it’s not carried by nostalgia (like the old Resident Evil games which have also aged badly but I still do enjoy). Will give the second one a go someday. If it’s anything like the RE remakes I’ll probably enjoy it.

It’s quite far down my list but will pick it up someday and probably play it via moonlight then if it’s too much for the deck.

You might enjoy Bramble: The Mountain King then. It’s basically a walking simulator with a good (and spooky) atmosphere and a couple of simple puzzles sprinkled in.

I finished this not long ago on my steam deck. The story was engaging but the gameplay was a bit of a slog. Had to push myself to finish it but was probably worth it in the end.