Shouldn't have to hold the fast forward button; You should just click, and it stays, click again, and its off. The extra content system: No. It should be unlockable by completing in-game achievements, instead of having to use kreds to buy them. OR you could have it like Rank 31; You can get there yourself, but you have the option to buy your way to the highest rank, via kreds. I like the game, but this is a free flash game site, and paying contradicts that.
This is a damn good game. Not many games can take a classic and turn it into something unique, like this. I'm currently on level 13.. frustration @_@ All this needs is a few badges, and maybe even a way to create and submit your own levels. But this still gets a 5/5. Nice job!