Thanks for your feedback. I have used doozyui that helps me a lot to create a “correct” ui in a small amount of time. The game are persistent but locally (with playerprefs that save/load a json containi g data of the session. One of this data is your wallet adress, a guid created at new game. This is the unique identifier I use online. For the online part, I use a small server coded on c# thanks to unisave (directly coded on the unity editor). It just store wallet adress and amount. And a table of pending transaction (my fake blockchain). When you mine in the game, you just ask this server to process a transaction. I missed time in the jam to make this part more clear and more valuable to the players ;) It’s my regret ;)