Exquisite Cadaver with travelling particles

My participation in a “Exquisite Cadaver” (http://en.wikipedia.org/wiki/Exquisite_corpse) event July 10th on FBAL where each person had his work projected on a wall visually connected on the sides with the others and particles would travel from projection to projection and each one would present it as they pleased.

I had two works presented:

Pac-Man : the particles turn into little balls and a Pac-Man is trying to get them and eating them. Each one he eats makes him grow bigger, and when he is big enough he pukes the balls out. The amount of balls puked is proportionally inverted to the amount of time taken to puke as a measure to control the amount of particles on the screen (and eventually on the other screens). There was also the choice of human control of the Pac-Man with a gamepad.

Asteroids : the particles turn into asteroids that collide with each other and travel lineary on the screen. Theres a Space Ship controlled by a gamepad that collides with the asteroids too. You can use the ship to push the asteroids to the other projections on the side. At the end there was also some shooting involved.