How to play, 1 minute:
1. Open the page and wait for "hub: connected" (about 20 s).
2. Tap "Receive 200 test PPRGBT".
3. Pick a game, post a challenge or accept one.
Tips: keep ONE tab open and in the foreground while a game runs, because mobile browsers pause pages when you switch apps. If something goes wrong, Wallet → Advanced → "Reset my test wallet". The page speaks English, Français and 中文 (top right).
