"Rule 3f
Playing on more than one account at the same time ("multi-clienting").
Comment:
Since there is an error message informing you that a Tibia client is already running when trying to start a second copy, you can obviously see that it is illegal and not intended for you to play on several accounts at the same time. Thus, do not control more than one account simultaneously and do not use a manipulated Tibia client, which poses an additional security risk to your computer and your account. Note that it does not matter whether you use multiple computers or the same computer to be online with more than one account, both is illegal and will lead to an account banishment."
