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
Two player mode
Defeat Reala to unlock a "2-player VS" selection on the options menu.
Hidden images
Put the game disc in a PC compatible CD-ROM drive. Look in the "EXTRAS" directory to find the images.