I'm glad I bought Kororinpa: Marble Mania before seeing your score, but your review is pretty much spot on. I think the graphics and sound are better than 6.5, but that's mostly subjective on my part. I like bright colors and chirpy music in games. The control is definitely tight in this game. The different balls, high scores, secret and mirror levels add some replay, but I agree that it is too short. It's also the only Wii game my wife got addicted too. So much so that on a few occasions she was playing at two or three in the morning. I'm hoping for a new version of this. BTW, I think $40 is a good price for this game, but it would have obviously sold more at $30 and possibly have more/better reviews given it's length to price ratio.