A huge black box covers the screen with the words "you win" written in Extreemely small letters at the top left corner of the screen. And your pebble can get popped as well? You should make it immortal.
This is one of the most incredible scenes. I made the whole thing transparent to see how it worked... I love how you used a series of pistons to make the rotation copy from joint to joint to the gears that get nudged, and I REALLY love how it reads off the track like sheet music.