Remember when you were a child and smashed cars into each other? Did you watch a lot of crash test footage for fun? that is this game. A long iteration on soft body physics simulation that goes back decades, this is one of the most compelling car simulations you can buy. It has lovingly crafted shitbox cars from the 1980's that your grandma drove, and they disintegrate and deform as you hurl them off cliffs. There is an incredible mod and mapping scene for this game, with an in-game browser for them. The greatest example of unstructured play using computer simulation.