Steam Multiplayer - duel & data save

Hey !
Thanks for anwsering both question.
I’v check your UWorks, but i couldn’t find a price ? May you tell me how much it is ?

By the way, i would like to figure how to overcome thoses 2 problems, because they are the two last difficulties i’ll meet during the conception of my project.

My list of incomings problems were :
-Authentification system
-Reconnection system
-Buy-in-game system
-Database system (information about players)

Steam provide me tools for authentification and paiement system. I’m still looking for a way to make two players communicate each other, and how to store data.
If i could have a dedicated server, that would permit me to get two players communicate, AND store a database by my own way. But i dont like this solution because i already connect the player to the steam server.

According to you, it seems like i can use UserStats/Inventory/UGC in order to store data, great news ! I didn’t check for thoses ones. I will.

But now i really would like a system where the player press a “join a match” button, wait a few seconds to find another player, and they both duel without a host/join server system.
When the match is found, both player are connected to each other, and at the end, they both go back to the lobby, and the score is sent to the database to updates informations about the player.