Debug mode
press [A], [B], [Right], [A], [C], [A], [Down], [A], [B], [Right], [A] at the Sonic Team logo screen. A sound will confirm correct entry of this part of the code. Then, press [Up], [Down], [Left], [Right], [A] + [Start] at the title screen. A sound will confirm correct entry of this part of the code. Highlight one of Elliot's dreams and press [X], [Y], [Z], [Y], [X], [Start]. Pause game play as Elliot, then press [Right], [A], [Left]x2, [Y], [Start]. Collect fifty orbs and jump. Pause game play while In mid-air and the debug screen will appear.
Song debug
Pause the game, and hold [L] + [R] + [Y]. A row of numbers representing the current song and song part will appear. The numbers have the following meaning:
0: Very happy Nightopians
1: Happy Nightopians
2: Apathetic Nightopians
3: Angry Nightopians
Full-screen pause
Press [Start] to pause the game. Hold [X] + [Y] + [Z] to remove the word "Pause" from the screen.
Two player mode
Defeat Reala to unlock a "2-player VS" selection on the options menu.
No star trail
Begin game play and complete Stick Canyon in the Act 3. Enter the magnet, press [A] + [B] + [C] + [Start], and select any level. Press [A] + [B] + [C] + [Start] to return to normal.
Hidden images
Put the game disc in a PC compatible CD-ROM drive. Look in the "EXTRAS" directory to find the images.
New theme song
Complete the game with straight A's. The theme song will be sung by adults instead of children.