I think this is a great into to the bridge mechanic game type. The cute style would be great to get your kids in on as well. And crazyboy554, there were bridge games around BEFORE Cargo Bridge (which is actually VERY different from this mechanic)
Great engine ... didn't have to put much thought into solving the levels... either hit whats in front of you, or do nothing at all. Great start however :D
To much "boohoo its too hard" ... do you want something pathetically easy? Rating low because you can't be bothered to try (or read the instructions, LukeSGUK) is lame. Only gripe on my side is odd momentum when jumping against objects, but nothing crippling. 4/5