EDITED TO ADD: I played this a second time on my Mac and it ran absolutely fine. Not sure if the Flash plugin was updated or you fixed the bug, but… holy heck was it worth coming back to! There's so much variety and cleverness in the later levels. Awesome job, bumping straight to 5 stars!
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Original review:
Argh… this was really fun, but I didn't see the warning about it breaking on Macs. I got to what I think was a boss (big triangle in the middle of the screen?) but it suddenly went blank after collecting a couple of little boxes. Haven't got another box to hand.
Other than that, seems like a really fun game!