This trick was mentioned earlier. Just stack the purple bricks end over end. You will be able to beat 350 pretty easily and get the card. Could not quite reach 600 that way though.
The orange wire appears to be broken for me.
When I click and drag for the red and blue wires it will terminate the wire when I release the mouse button. This same idea does not work for the orange wire, it just stays active, even if I attempt to change wire colors.
I was just happy to beat it. It is a great concept and I would like to see more along the lines of this. I agree that level 11 was the most difficult and that keyboard in addition to mouse control would be helpful.
I really enjoyed the game. I am not really interested in saving my game; though maybe if I could enter a code to start at a higher level, rather than back at the beginning every time, that would be swell.