Although you can filter games in the Steam Store by both Steam Deck compatibility ... since it's not the lightest machine in the world at 669g (23.6oz), but some rubber grip would have been ...
This means it could run well, run terribly, or not run at all on the handheld Valve machine. The first of the two free Steam games is called Castle Break from Pauloondra. It was released back in 2019 ...