Marbility
How to Show Off Quantum Computing
Back to ProjectsApr – May 2025
Concept
This interactive exhibit introduces the audience to quantum concepts of entanglement, gates, probability, and qubits through an interactive game.
In the game, you and your teammate each control a qubit and try to score the correct probability given to you. You interact with gates and learn about probability and entanglement. With the aesthetics of Pinball and Plinko–widely-known, nostalgic games that are easy to understand–we attract people of all ages and backgrounds.
Inspired by old arcade games such as Plinko and Pinball.
How to Play
1. This is a 2-player game—bring a friend and play on the same team!
2. Press the Start button on the right to launch the round.
3. Both players receive a probability target while a countdown begins.
4. Each player applies single-qubit gates using their side of the board; rotating the encoder knob sends an Rx gate to evolve the qubit state.
5. Ten levers on each board affect the shared superposition. Some move independently, while entangled levers mirror or invert the teammate's motion, so one player's gate can change the other's qubit.
6. Hitting the large Entangle button reshuffles the entanglement graph, reassigning which levers link and how strongly they influence each other.
7. Tap your personal X-gate button to flip your qubit instantly when timing matters.
8. When the countdown hits zero, all inputs freeze and players pour marbles into the top of the machine.
9. Marbles cascade through the boards and get tallied at the base.
10. Once every marble is counted, the scoreboard reveals each player's accuracy and the final team score.
Development Process
Final Outcome
