to get the coins, you could just run over them with the correct fraction. then, reset your equipment, solve the level without getting the coin, and you get the coin anyway! kind of cheap, but some levels are way too hard to beat and get the coin at the same time.
i love stacking soil. when you drop a whole lot, the edges twitch for about half a minute until its aligned. then, when you drop more, it goes down perfectly. :)
some of the levels are so hard... if they badged this game i wouldn't be too surprised if getting all the in-game achievements was an impossible. 5/5 for awesomeness.
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