At the song selection screen, press Left, Right, Down, Up.
At the song selection menu, hold Left + Right + Start. Choose one of the category letters to view songs that begin with that letter.
After choosing a song at the selection screen, hold Start. Alternately, choose a song at the selection screen, then hold Circle.
Select a difficulty setting, then hold Start just before the song selection screen appears. If timed correctly, numbers will appear on the groove radar, indicating the groove value of each song.
At the difficulty selection screen, highlight "Heavy" and press Right to select Oni mode.
Press Start to cycle through various song sorting methods (alphabetical, beats per minute, best, and normal).
Successfully complete the game and press a button while one of the names in the credits is next to the guide arrows at the top of the screen.
Finish the final song in Heavy mode with an "AA" rank to unlock the MAX 300 extra stage. Complete the extra stage (MAX 300 in Heavy mode, at fast speed, and reverse arrows) to unlock MAX 300 in Arcade mode. Alternately, complete 100 songs in Heavy mode.
Successfully complete the MAX 300 extra stage with at least an "AA" rank to unlock the Candy extra stage. Successfully complete this extra stage to unlock Candy. Alternately, complete 200 songs on any difficulty setting.
Fail one song in Arcade mode.
Complete 500 songs in game mode. Alternately, complete the Hardcore course in Oni mode.
Complete 65 stages in Arcade mode.
Complete 95 stages in Arcade mode.
Complete 80 stages in Arcade mode.
Fail any Oni mode course.
Complete 15 stages in Arcade mode.
Complete 250 stages on any difficulty setting.
Complete 30 stages in Arcade mode.
Complete 75 stages in Arcade mode.
Complete 45 stages in Arcade mode.
Complete 85 stages in Arcade mode.
Complete 40 stages in Arcade mode.
Complete 35 stages in Arcade mode.
Complete 25 stages in Arcade mode.
Complete 5 stages in Arcade mode.
Complete 90 stages in Arcade mode.
Complete 10 stages in Arcade mode.
Complete 55 stages in Arcade mode.
Complete 50 stages in Arcade mode.
Fail the Extra stage once.
Complete 20 stages in Arcade mode.
Complete 300 songs in arcade mode on any difficulty setting.
Complete 150 songs in arcade mode on any difficulty setting.
Complete the Firefly (Be For U), Dive (More deep and deeper style- Be For U), or True (Radio edit - Kosaka Riyu) songs. Once two of those songs are completed, the True (Trance Sunrise Mix) song will be unlocked.
This trick requires a controller with an auto-fire feature. Set a game to play in Event mode and start a Versus game at any difficulty, except for Oni mode. Using a method of your choice, hold X or Circle for an extended period of time at the song selection screen. Songs that can be unlocked by playing a number of songs should be unlocked after about one and a half hours. Note: This will affect the Best rating of one song; most likely the default song.
To complete the songs easier, enable the "Extra options" code, then choose "Little" at the cheat menu. Additionally, play the game in Light mode to unlock songs easier.
To unlock new items, modes, songs, and Oni courses, you must get a certain amount of points. After the credits begin, the game displays how many points needed for the next unlockable bones. The following ranks will earn the corresponding amount of points:
- AAA: 10 Points
- AA: 8 Points
- A: 6 Points
- B: 4 Points
- C: 3 Points
- D: 2 Points
- E: 1 Point
- AA: 8 Points
The procedure is applicable in Challenge mode; however, because you can only miss four steps per song, then the only rating you can get per song is "AAA", "AA", "A", or "E". Also, if two people are playing, you each get points respectively.