Puzzle games about electricity. Electric wires Rotate wires, bulbs and batteries to light all bulbs of the circuit by the current from batteries. Rotating resistors Rotate resistors to light all bulbs of the circuit by the current from batteries. Logic gates Touch the voltage sources to toggle them between 0 (low voltage) and 1 (high voltage). The level is completed, when you glow all the bulbs by high voltage. Semiconductor diodes Rotate diodes to light all bulbs of the circuit by the current from batteries.