What it teaches
What is safe to tell a website and what is not. Deliberately concrete: "be careful online" means nothing to an eight-year-old, and "your school's name is not a secret but your address is" is something they can act on.
The safe answers matter as much as the unsafe ones. A child who learns that everything is dangerous learns nothing useful — a made-up nickname, a favourite colour and a drawing they made are all fine.
How it works
One thing appears and the answer is safe or private. The reason follows the right answer, and it is always a reason rather than a rule.
What to look for
The hardest one is the birthday year, because it looks harmless and is half of what somebody needs to pretend to be you. It is worth talking about rather than only answering.
This game is a start, not a substitute for the conversation. It gives you ten things to have the conversation about.