It's pretty janky and based on a fork of the Sandbox game (hence the large size), but this level features lots of fun things for players to mess around with - vehicles, weapons, animals, npcs, various joint based bridges and doors, you can even jump the sharks if you dare!!!!  Should work multiplayer, use the physics gun to grab peaches from trees, and refill peach ammo in the bushes!!!!!!  Watch out for the big beasts (and the cops)!