This is the only game that this ever happen so far, yours also lags my main browser so much it crashes when loading... But any ways, I've downloaded the source code to run locally. Overall I think it is a cool game, the only main feedback is making it clear where the blocks should be, on my first playthrough I put the block on the left and I still lost, then I got stuck on the first level until I tried doing the same thing again and it worked that time... Overall it is a pretty cool idea.