The main game occasionally forces you to log in via Google to prevent bots. Unblocked versions often bypass this, letting you play anonymously. You don't have to worry about your boss seeing "Territorial.io" in your browser history.
If you want to win (and not get wiped out in the first two minutes), keep these strategies in mind: territorial io unblocked 76 free
Success in relies more on timing than brute force: The main game occasionally forces you to log