I'd suggest changing the three block level to actually require using all three blocks.
I can simply go to the highest box, push it off, stand on it while it's falling, and jump/walk to where I need to go.
Perhaps make it a longer ditch so people like me can't jump there, and have to push the blocks there?
It had its few quirks, but was a neat game overall.
But what kinda bugged me was how whenever the main characters talked, their facial expressions were always the same! xD
A nice simple easy game, without the forward cheat.
I really liked the concept on level 3, and I think doing the same kinda thing could be used in harder levels.
But... if you can't get to at least level nine you suck, not the game.
That being said, the game wasn't that fun for me because of how fast I solved it. On top of which I've yet to see the "green" button on level 10.