What are game slots?
With a Premium subscription, you can synchronize all the characters you have on 3 different game accounts. Each account takes 1 game slot so you have 3 game slots with your Magelo Premium membership. As soon as you synchronize a character from a new account, a game slot is taken, even if you delete the character after.
You can free your game slots once a year in your account management page.
At any time of your subscription you can buy 7 extra game slots. The cost will be based on the time left on your currently active subscription.
For more info please visit the FAQ entry How much do I have to pay for Premium?