Successfully complete all levels and save your friends to unlock the Uranoid mini-game at the main menu. In the Japanese version of the game, press R, Left, Right, L, Right, R at the title screen to unlock the Uranoid mini-game. If you entered the code correctly, you will hear a sound.

Successfully complete Clear Game, Uranoid, and Quest Game modes to unlock seven geometric backgrounds, a metal frame, and Twin Block.

Successfully complete all Quest mode levels to unlock the Original Vaus ship.

Successfully complete Zone V' in Quest mode to unlock Artemis.

Successfully complete Zone Z' in Quest mode to unlock Neith.

Successfully complete Zone W in Quest mode to unlock Operon.

Successfully complete Zone V in Quest mode to unlock Rhea.

Successfully complete Theta-5 in Uranoid with a score of at least 400,000 points to unlock the Captain Neo background music.

Successfully complete Eta-5 in Uranoid with a score of at least 400,000 points to unlock the Happy Smiling background music.

Successfully complete Lota in Uranoid with a score of at least 400,000 points to unlock the Revenge Of Arkanoid background music.