DDRMAX2: Dance Dance Revolution 7th Mix

Extra options:
Hold Start when choosing a song at the selection screen.

View song list:
Hold Left + Right + Start at the song selection menu. Choose one of the category letters to view songs that begin with that letter.

Left mode:
Press Up, Down, Right, Left at the song selection screen.

Right mode:
Press Up, Down, Left, Right at the song selection screen.

Other mode:
Press Left, Down, Right at the song selection screen.

Boost mode:
Press Left, Right, Down at the song selection screen.

Reverse mode:
Press Down, Left, Right, Left, Right at the song selection screen.

Hidden, Sudden, and Stealth modes:
Press Left, Up, Right at the song selection screen to play in hidden mode. Repeat this code while still at the song selection screen to play in sudden mode. Repeat this code a third time while still at the song selection screen to play in stealth mode. Repeating this code again while still at the song selection screen will return the game to normal.

No freeze arrows:
Press Right, Left, Down, Up at the song selection screen.

Cancel all modes:
Press Left, Right, Left, Right, Left, Right, Left, Right at the song selection screen to disable all active modes.

MaxX Unlimited song:
Get an "AA" on the last song under the heavy difficulty setting. Note: Little mode cannot be used.

Kakumei song:
Get an "AA" rank on the MaxX Unlimited song. Note: The MaxX Unlimited song must be played when it is unlocked as a bonus, and not from the song selection list, if it is already available.

Unlock songs:
Note: This code can only be done by an arcade operator. Open the machine's cabinet and press Service to enter test mode. Select "Clear Points", then choose "Game Options". Hold Down for player one and hold Service. Press Start for player one. Select "Append", then enter one of the following codes.

First five songs: Enter DGMBJCU - YCDPMAS as a code.
First ten songs: Enter MCQEMRG - KHVOBWG as a code.
First fifteen songs: Enter BARTYY - PDSHTBH as a code.
First twenty songs: Enter USGCFHJ-JLBBYXK as a code.
First twenty five songs: Enter IJURVIT-WXFCOJW as a code.
All songs: Enter JCYWEKJ-DZJNBGF as a code.