Successfully complete Zone V' in Quest mode.
Captain Neo background music
Successfully complete Theta-5 in Uranoid.
Geometric backgrounds, metal frame, and Twin Block
Successfully complete the game again on a cleared saved game file in Uranoid, and Quest Game modes to unlock seven geometric backgrounds, a metal frame, and Twin Block.
Happy Smiling background music
Successfully complete Eta-5 in Uranoid.
Successfully complete Zone Z' in Quest mode.
Successfully complete Zone W in Quest mode.
Complete all Quest mode levels.
Revenge Of Arkanoid background music
Successfully complete Iota in Uranoid with a score of at least 400,000 points.
Successfully complete Zone V in Quest mode.
Successfully complete all levels and save your friends to unlock the Uranoid option at the main menu.
Press R, Left, Right, L, Right, R at the title screen. A sound will confirm correct code entry. An option to play Uranoid will now appear on the single player menu.
Note: This code applies to the Japanese version only.
Complete all levels to save all your friends and Uranoid mode will be available when you return to the main menu.
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