Very addictive game, 4/5; hard badge harder than impossible, i think. For the hard, i used speed placing beyond 500, only using inestable equilibre, reached 600 and then collapsed. For the hard, expand the base 1 brick each side and try to make it thinner as you go up. This is mine: http://img249.imageshack.us/my.php?image=99brickspb5.jpg
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