RCWeb Flappy Fish is an underwater arcade game where bright reef fish swim through coral tunnel gaps. Play directly on the main screen, or let players join from phones using the QR code.

Open /flappy-fish/ on the screen everyone will watch. The game shows a QR code in the corner; players scan it to open the phone controller in the same room.
You can also play locally on the main screen:
Each tap makes your fish swim upward. Gravity-like current pulls the fish down, so the goal is to time taps and pass through each coral tunnel gap.
The display shows the reef course, the current score, the best score, and each joined fish. When nobody is playing, a demo school swims through the reef so the game is ready for the next player.
Players should open /flappy-fish-c/ from the QR code. Each phone gets one large SWIM button, plus its assigned fish name, score, and win count.