You are a small ball that bounces it's way through levels filled with danger. Plenty of PhysX and nice graphics!
The mines level tested in Unity 3. Can't see from here, but shadows are just great, not that pixelated from current Unity but a lot smoothed. Also it bakes lightmaps into anything static, and results are just great!
On the game side, improved a lot the bridge, now it looks like an actual wooden bridge (without texture, that is). The wooden planks and boxes have a little script that makes it's mass proportional to it's dimensions, thus making all of them have the same density! Built a bridge with them, just for fun (and it falls behind you).