The top results based on the latest update are PAC-MAN Championship Edition DX+ [Score: 1.3], Shovel Knight: Treasure Trove [Score: 1.1] and You Have to Win the Game [Score: 1.1].
The top rated games you can find here are Cuphead [SteamPeek Rating: 10.6] ranked #93, Hotline Miami [SteamPeek Rating: 10.5] ranked #64 and Papers, Please [SteamPeek Rating: 10.1] ranked #152.
Also don't forget to check the newest releases Prodeus [Release date: 2020-11-09] ranked #8, Leisure Suit Larry - Wet Dreams Dry Twice [Release date: 2020-10-23] ranked #227 and Rogue [Release date: 2020-10-22] ranked #123.
While it is tempting to play with the newest and the best, there might be some other gems in the results, like Commander Keen Complete Pack [SteamPeek Rating: 6.5] ranked #52, The Inner World: The Last Wind Monk [SteamPeek Rating: 4.6] ranked #54 and Slipstream [SteamPeek Rating: 5.9] ranked #55.