How can you get a free Blockland key in demo mode?

The "free keys" are usually connected to viruses or trojans. There is a version of the key that will allow you to use some of the full version, but only offline. This can also affect the installation of a paid key, so it is not recommended.

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Any free keys that are still in use of other players means that you are taking their play time. Any free keys whatsoever are piracy and cheating the owner out of his money.