The 'solution' fails. And sometimes the ball bounces a different way without any of the set-up changing- both signs that the physics engine is buggy.
Apart from that, pretty good- but fix it!
A bridge building game where it doesn't remember your previous bridges? For shame...
No excuse for that when saving money in early levels seems to be so important.
Sync issues may be a bump of users now it's been released. Hopefully it'll die down a bit or there'll be some back-end improvements. Looks like there's a decent strategy game in there waiting to played once that's smoothed out.
It shouldn't be too hard to check for other solutions- just iterate across the pieces and check there are no left over lines. There are a couple of rendering glitches, but overall it's pretty fine.