View opponents:
Enter Thats_Entertainment_Neutopia as the password. Enter ZA tsu TSU E N TA TE I ME N TO NI yu U TO PI A as a password in the Japanese version of the game.

Sound test:
Enter Music_From_Neutopia as a password. Enter MI yu U JI tsu KU FU RO MU NI yu U TO PI A as a password in the Japanese version of the game.