Hi @mhdhammadeh welcome
I’m glad you’ve had great success so far with Nakama server. I’ll answer each of your questions below.
In this case, is there any kind of event that handles changing the value of any slot of database on Nakama?
There’s no event to handle the mutation of any data in the database but there are APIs available in the server framework to update user wallets, storage objects, user metadata, etc, etc. You should use these APIs to implement parts of your game logic.
I want to allow users shares them abilities in the game like coins r keys.
Hope this helps.