Yoku's Island Express (2018): I purchased one game, still have to play it in coming days. I had visitors and no time to play, but this game piqued my interest. It's a Metroidvania platformer style, mixed in with pinball mechanics. And also it is 90% off and cost me only €1,99 in Germany (or $1.99 in US presumably). It is Steam Deck Verified and 84% on Metacritic / 83% on OpenCritic.