Combine logic and science for a fun, electrifying lesson in circuitry. Sixteen tokens snap into place in different combinations to complete the circuit and light the beacon. Challenge cards get you started by showing where to place your starter token, and then you figure out where to place the other tokens needed to complete the pattern (circuit). Three AAA batteries (not included) are placed in the battery receptacle, which is also your start token. The start and finish tokens are wired together and are the power supply for your circuit. You are to use only the tokens seen on the challenge card. There are 60 challenge cards divided into four levels beginner, intermediate, advanced and expert. Light up your logical thinking with this twist on the Rush Hour game.