Great game
It was rather addicting and made me think a little. At first I thought it was almost too easy, and quit after level 14. Then i noticed people were having trouble in the later levels, so i started it up and what do you know they instantly got harder. Was stuck on 16 and 19 for a bit, but eventually solved them. Currently on 21 will finish tomorrow.
Overall it's great but could be improved in a few ways. It needs sound effects. Sounds and music really enhance the gameplay. It makes it not so dull and repetitive if you have intriguing sounds. 2nd, the graphics of the cube. I know it's API and all, but that doesnt prevent you from adding neat little effects and stuff when a row is lit up. You could have the row glow and pulsate, you could have it overall look nice witl a lot more dynamic effects. Perhaps even texture mapping (although i know flash can't handel that very well yet). But it needs to look a little better.
Great game though.