Sony and Sumo Digital recently put out another port, this time it's Sackboy: A Big Adventure an offshoot of the LittleBigPlanet series.
Unlike previous Sony releases, it didn't have a Steam Deck rating before release and still doesn't yet. The good news is that it works out of the box on both Steam Deck and Fedora Linux seemingly without any major technical issues. It does have some shader stutter, which smoothens out over time though (likely as it had no full testing before release).
With Proton 7, it's click and play on Steam Deck and Linux. Here's some footage:
Very happy with how this runs. On my desktop, max settings produced a very smooth experience overall. On Steam Deck, keeping it on High settings, with the screen locked to 40Hz and TDP set to 10 — gave a really good feeling too with better battery life than the default (a good while over 2 hours).
On desktop, it seems it doesn't get along with MangoHud, which vanished every time on the initial loading screen so in the brief desktop bit in the video, you will see the normal Steam FPS counter in the top left corner.