Goober Dash has been released on itch.io a few days ago and I recommend it to anyone who loves 2D-Platformers. It is completely free and best described as a mix of Mario Maker/Fall Guys in 2D/Mario Kart.
https://winterpixel.itch.io/goober-dash
In this game you race up to 30 other real players (+ 1 bot, but he is completely lost) on tons of various levels - the majority created by the big dedicated playerbase in an awesome level-editor. I already play this game since over a year (on Steam) and it is pretty easy to learn but very hard to master and never boring, even after playing it for more than 1000 hours like me. You compete with real people of various skill all the time and you need to be very good at the game to collect many wins. Every race is a tough competition! You can practice all races in the time-trial mode that also has a global-leaderboard of the 25 best players worldwide. This game is just awesome and already has a dedicated playerbase that you can meet in the Winterpixel-Discord. It is truly a hidden gem that will entertain you for many hours if you like to compete online with the very best goobers of the world!