Clair Obscur Expedition 33 launched with an Unsupported rating on Valve's handheld, but this has questionably been upgraded to Playable.

Expedition 33 is currently doing a rather well-deserved victory lap after one million sales and stellar Steam numbers—which is heartening to see from an ambitious AA studio. I went in not expecting too much myself,

Yes, Clair Obscur: Expedition 33 is playable on gaming handhelds like the Steam Deck, ASUS ROG Ally, and Lenovo Legion Go. For the best experience, though, you'll need to make a few tweaks to the settings.