Dynamic particles in case of damage.
DDP adds a special garbage collection system for real-time collisions. The particles bounce off the ground and walls, slide and stop rather than disappear.

Joint breaks and impacts generate their own debris: nuts, bolts, and metal fragments from broken welds. Shards of glass and plastic, pieces of concrete, and dust from collisions all corresponded to the force of the impact.

It includes a user interface application for changing game parameters with live sliders and presets for adjusting radiation, elasticity, friction, and more.

In version 2.0:
- Particles are now saved after cars are reset (this can be changed in the settings).
- Optimization.
- Sparks are now created when they collide with surfaces (so sliding through mud will no longer emit them).