Air (PlayStation 2)

Air
Developers: VisualArt's, Key Publisher: NEC Interchannel Platform: PlayStation 2 Released in JP: August 8, 2002, Septeber 11, 2005 (Best Edition) This game has debugging material. This game has a hidden sound test. This game has a hidden level select.

Debug Mode

With the below code on, selecting デバッグ (debug) in the pause menu will turn on debug mode. This will unlock everything in the game, display debug information on-screen, and will open a debug menu when starting a new game.

SLPS-25127 codes:

Master Code (only needed for cheat devices)
901A4978 0C069206

Enable Debug Mode
201AEDD0 00000001
20253F48 00000001

(Source: Original TCRF research)

Debug Menu

Starting a new game with debug mode active will present you with this menu. This allows you to view various scenes and listen to music.