CheatCodes.com has all the official Tetrisphere N64 cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Wednesday May 22, 2013 for Tetrisphere are shown below.
Enter "CREDITS" as a name.
Enter "VORTEX" as a name. Then, hold the reset button. Now a sequence showing all robots being sucked into a vortex will be displayed after several seconds. Release the reset button to end the display.
Enter "G[Alien head]MEBOY" as a name. Then, press L + C-Right + C-Down to enter the special character in the name. Enter the audio screen to access nine additional songs.
Enter "LINES" as a name. Now the object of the game is to remove an area large enough to released the trapped character. Line up three pieces in a horizontal or vertical line to remove them.
Enter "[Saturn][Spaceship][Rocket][Heart][Skull]" as a name. Then, press L + C- Right + C-Down to enter the special characters in the name. Any level in any game mode may now be accessed.
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