Water-ghost Maze

Picture the scene: it is a warm, sultry night. You are exploring a maze, dimly lit by fairy-lights in the hedges. You start walking down a long avenue, when suddenly, at the other end, appears an 8-foot tall watery shape, glowing an eery blue. It rushes towards you. You turn and run, but the beast is too fast, and before you can reach a corner, you are engulfed in a surge of foaming water. It sweeps off into the maze, looking for other victims, and you are left soaking. You just lost the Water-ghost Maze Game - your wet clothes will mean that when you finally reach the centre of this maze, you will not get to choose a small furry toy as a prize.

That's the basic idea, a maze with water-ghosts that rush around inside. How is this done? The floor of the maze is covered with thousands of variable water fountains, quite closely packed. These act in a similar way to pixels on a computer screen. By activating a group of them, with the ones in the middle spurting higher than the ones at the outside, you get a sort of domed cylinder effect - think of the shapes of the ghosts in Pac-man. Each water jet also contains a blue light. When the jet is activated the light is also activated, and since the water is aerated, and so scatters the light, the water seems to glow blue.

By activating consecutive water jets, you can make the "ghost" move anywhere you want in the maze, and at any speed. The aim of the game is to get to the centre of the maze dry, so you can only enter the maze if you are wearing dry clothes. Not swimming cossy. This is to generate a sense of suspense about getting soaked, which is half the fun of the game.

The ghosts are controlled by a computer algorithm, similar to the one used in Pac-man. I imagine them moving at a brisk running pace, so if you see one you've gotta turn around and RUN LIKE HELL, while screaming like a girl. Or you get wet.