delgado - this looks interesting! I was wondering if you could clarify this feature:
"add simple micropayments and manually add purhased gold to customer account <img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":)" title="Smile">"
By what method do you process payments? I would definitely be willing to get this if it works for HTML5 web apps.
Its free proposition, you have all users data in Your firebase account, you have created paypal bytton 'Buy 10k gold' you receive money from player x and manually search player and add to his pool.
https://developer.paypal.com/docs/class ... ow_step_1/
and thats look in c2 project
https://pligamedev.github.io/Magia&Survival/