The capsules on the right are arranged in a truth table. White capsules represent OFF conditions, blue capsules represent ON conditions. When you run the game, the capsules advance on line at a time. As each row of capsules reaches the gate, they activate the inputs on the left. Place wires and logic gates to generate the desired outputs. Wires can be stretched and connected to gates and each other. As signal moves through wires and gates, they light up so that you can see how the logic is flowing through your assembly with each step.