The game consists of painting squares and taking the red items to turn these squares into points. The level changes every so often.
The idea is that these climbing blocks hurt the Player, so the boxes on the ground are marked in blue. By the way also going to shoot. I have thought it is a local multiplayer, this is where the shots come in, when a bullet hits the opponent one point is dropped from their accumulated boxes.
The base of the generator is made with the Cellular Automata algorithm.