Space Invaders XL is a 3-player interactive game created by Thijs Eerens. It’s a large physical version of the original Space Invader video game. Two players have to aim the canon by pulling a rope. The third person, sitting on top of canon, controls the canon. He or she shoots the balls at the right moment in order to hit the targets. However, a robot programmed to obstruct the three players by moving in front of the canon is forcing the players to constantly move the canon. So the two players have to dodge the robot and have to aim on the targets (the Space Invaders) on instruction of the “canon-player”, by moving him or her from left to right. But when they pull the rope at the same time the canon won’t move. Therefore, communication between the three players is the key to a high score.