You are only allowed to play one free account per person. However, in certain circumstances people who live in the same household appear to us as the same person using two accounts.
If you are being 100% honest about having a second player playing from your same household, please contact one of our moderators or admins. They will attach a note to your account.
A word of warning though: If we find that accounts in the same household are being used to gain a competitive advantage in the game, we will permanently ban both accounts.