9 is Pop'n Cafe and had the GAMBLER Z unlock system. 8 and 9,both had 100 sec. Kitchen Battle.
9 was good,but the unlock system is horrible. Also,getting Cup*kun is a total pain in the ass.
Ah, Kitchen Battle. Damn my inaccuracy! I was *this* close to putting an "or whatever" after the song title to hedge my bets, but my sentence already contained a "whichever" and I didn't like the flow.
Anyway, the unlock mini-game in 9 was cool... at first. It starts really sucking when you're at 98% and have to go back to the beginning yet again... and then you keep rolling snake eyes.