In the Groove Cheats - PlayStation 2

Disconnected -Hyper- song
Press [Left], [Right], [Up], [Down], [Left]x2, [Right]x2 at the main menu. Sparkles will appear to confirm correct code entry.

All songs
Press [Up], [Right], [Up], [Right], [Left], [Down], [Left], [Down], [Up], [Right], [Down], [Left], [Up], [Left], [Down], [Right] at the main menu. Sparkles will appear to confirm correct code entry.

Good ending
Press [Up]x2, [Down]x2, [Left], [Right], [Left], [Right] at the main menu. Sparkles will appear to confirm correct code entry. Complete a round to view the game's good ending.

Bonuses
Clear the indicated number of songs to unlock the corresponding bonus.

Disconnected -Hyper song: 10 songs
Bounce marathon: 20 songs
Tell song: 30 songs
Bumpy modifier: 40 songs
Anubis song: 50 songs
Outer World marathon: 60 songs
Bubble Dancer song: 70 songs
Beat modifier: 80 songs
Disconnected -Mobius song: 90 songs
Liquid Moon song (In The Groove 2): 100 songs
Don't Promise Me ~Happiness Comes Mix~ song: 110 songs
Funk Factory song (In The Groove 2): 120 songs
DJ Party song: 130 songs
Tribal Style song (In The Groove 2): 140 songs
Infection song: 150 songs
The Legend marathon: 160 songs
Pandemonium song: 170 songs
Incognito song (In The Groove 2): 180 songs
Xuxa song: 190 songs
Wake Up song (In The Groove 2): 200 songs

Alternate credits
Complete the last song in any game mode with a full combo. The credits will now include photographs of the development team and test location.