To select Little, Flat, Left, Right, Shuffle, Mirror, Hidden, Sudden, or Stealth choose your song, and at the Difficulty select screen, press ''Start'' and then use left, right, up, and down to select the different modes.
Simply change the game's setting to All Music Mode ON and play the game mode. Once you have beaten the game mode the song ''After the Game'' will play and true credits will show up instead of the song list. I really like this ending the background shows arrows going up and they are in 3D.
When in Practice Mode, hold down the Select button. The song will slowly go backwards through the five speed settings, which sounds pretty funky. When the song is at speed setting #1 (the slowest setting) and you are still holding the Select button, the song will reset back to speed setting #5 (the normal setting).
First unlock at least 8 new songs by simply playing Game Mode or Solo Mode. Each 5 songs cleared unlock a new song. After 8 songs have been unlocked, you will see the new ''Hidden Collection'' on the song list selection. This category includes solely the unlocked songs you have earned. Along with this mode Akira wil be the dancing character in the backround during songs!
Gain access to the Hidden Collection and play on the second player side. You will now play as Yuni.