The room before the machine
Unseen
One choice, three times over: hide a payment, or leave it open. The arcade's wallet pays real testnet money either way, and the screen then shows you what the network actually saw. Nothing here is pretend.
What it teaches
When you hide a payment, the public record keeps no amount, no sender and no receiver. When you leave it open, anyone can follow where it went and how much moved.
What you will see
Two buttons, a clock while the payment lands, and a panel that lists what the public can see.