My first impression was that it was going to be something Chu Chu Rocket-esque, but then it turned into a circuit creator that gave me flashbacks to my redstone machinery days. The idea is awesome, but it might be a little complex for me. I got to level 29, but I couldn't quite work how the bridges interacted with the gates and buffers.
Overall, it's a really cool concept and I can't imagine the programming side of it. Well done!
EDIT: I forgot to mention, "Mouse3" as the camera control is awkward, since I don't have a middle mouse button - I had to use program to emulate the button press. Oh, also, the music track is fantastic!