This is a little driving game experiment inspired by Blast Corps, a fun game for the Nintendo 64. Collision is pixel based. The bulldozer scans the pixels in front of it and if they're not the same as the background color, it creates debris particles for them and alters the velocity of the bulldozer. There's a little bit of extra code for running over people and having the red particles leave trails to look like blood. Blood makes every game better.