TENNISTRONIC'S FIRST UPDATE IN EARLY ACCESS v0.01
The purpose of this update is to make the Leaderboards fully functional. For the moment they are available on the Steam website and in the Steam API (by pressing Shift+Tab during the game > Achievements > Leaderboards > Global Leaderboards).
Once the update is downloaded, when you finish playing the first game in single-player mode, any record you have previously stored will be saved on the leaderboards. And from that moment on, all the scores you get will be saved directly on the leaderboards. Remember that for this, it is essential to be logged in Steam and be connected to the internet when you play the game.
As you already know, Steam leaderboards allow you to see the world score records, and also the score records of your friends who have the game.