At the title screen, enter any of the codes below (the numbers refer to the buttons on the Pop'n Music controller, counting from the leftmost to rightmost button in a zigzag pattern) and you should hear a chime. Then play Arcade mode and you will be able to play whatever song or difficulty the code unlocked. For the hyper/EX unlock code, when you play these difficulties in Arcade mode (you must not quit the song partway, but you do not have to pass it) they will be unlocked in Free mode.
Effect Code Unlock secret AC songs 19999999991 Unlock secret characters 123123123123 Unlock secret courses 6478664786 Unlock secret CS songs 29999999992 Unlock secret ee'mall songs 12346987 Unlock secret hyper/EX difficulties for songs 123464786 Unlock secret long versions 1234123446 Unlock secret options 464646 Unlock secret Pop'n Music 10 preview songs 3692147 Unlock secret remixes 777786 Unlock secret revival songs from previous games 8794613
Contributed By: Xythar.
Unlockable How to Unlock Cup-Kun Earn 1800 points in the Pop 'n Cafe in free mode.
Contributed By: BakaOrochi.
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