Blockland by itself is objectively not a video game as it lacks a "win" condition.
The good news for you is that in order to "win Blockland", you need only accept that it's completely pointless since there's nothing to gain or achieve and never touch it again. That's how you truly win AND turn it into a game at the same time. I personally am very bad because I keep opening up the loving thing expecting there to be something interesting to do.