Great game.
It took a few days, but I eventually got all of the combinations (Though I used quite a few hints.). My high score, was 6,660... That has to be the most amusing coincidence I have ever seen. On the note of scores, devil401 has over one billion, not a typo, in scores, and I quite frankly don't think that's possible. I'm also in disbelief about selectLOL, with over 16,000 in score.
The game was great, the combinations were challenging, but not so much I wanted to give up. (Thank goodness I wrote them down when I came back, someone had apparently cleared my cache and cookies, and I lost my progress. Doesn't know if everyone loses their progress when they leave the game, but I'm assuming they don't.)
The graphics are awesome, the music well fitting, though it did get a tad bit boring after a while. This has to be one of the best games on Newgrounds.