Aethernal is free to play. If you enjoy it, you can make a voluntary donation towards the server costs. As a thank-you, coins are added to your account to spend in the item shop in the game.
Log in to donate and receive the thank-you coins on your account. Log in
Donations are voluntary and in euros. They help pay for the servers.
After your donation the thank-you coins (and any bonus coins) are added to your account automatically.
Spend them in the item shop in the game; the items arrive in the Item-Shop storage. Coins have no cash value.
Bitcoin donations go through our own BTCPay Server checkout. The amount is fixed in euros when the invoice is created, the invoice is valid for 30 minutes, and the thank-you coins are added once the payment is confirmed.