Gem X - PC
Here are the level codes.
They have to be typed on the main menu.
Level B : EARTHIAN Level C : KENICHI Level D : INOKUMA
Level E : BURAI Level F : BADMAN Level G : NETWORK
Level H : YOKOHAMA Level I : EXACT Level J : X68000
Level K : TURRICAN Level L : REDMOON Level M : CAMPAIGN
Level N : MEGAMAN Level O : SYVALION Level P : FMTOWNS
Level Q : CHIERIE Level R : GAMERION Level S : ZAWAS
Level T : ROBOTECH Level U : POPULOUS
They have to be typed on the main menu.
Level B : EARTHIAN Level C : KENICHI Level D : INOKUMA
Level E : BURAI Level F : BADMAN Level G : NETWORK
Level H : YOKOHAMA Level I : EXACT Level J : X68000
Level K : TURRICAN Level L : REDMOON Level M : CAMPAIGN
Level N : MEGAMAN Level O : SYVALION Level P : FMTOWNS
Level Q : CHIERIE Level R : GAMERION Level S : ZAWAS
Level T : ROBOTECH Level U : POPULOUS