The game consists of four handles, each equipped with a button. Each player grabs a handle and the game is started. A red light starts to blink and a nasty wailing sound is played. Then, suddenly, the light will turn green and sound goes silent. At that point, players must push the button in their handle. The LAST player to do that gets an electrical shock. Players will also be shocked, if they push the button while the light is red. "Extreme" mode : in this mode ONLY the fastest button pusher is safe, while the rest are shocked. Obviously this only makes a difference with 3 or 4 players. With 2, it plays identical to the original. "Revenge" mode : in this mode each player chooses who they would like to shock if they were to win. Press the button on the handle until the red light on your base control is targeting your chosen victim. The 3 lights correspond as follows : centre is the player opposite, left is the player to your left and right is the player to your right. Start the game and the fastest finger gets to shock their chosen victim. The game uses three AAA batteries, so the shock is not dangerous, but it certainly adds an element of tension to the otherwise rather simple test of reacting speed. Re-implements: Lightning Reaction Lightning Reaction Extreme