Bonus songsThe Genesis (Mega Drive) version of the game, produced by Technosoft, includes several bonus songs that can be listened to instead of the game's normal BGM. They're accessed through the password screen, and each one is a remade version of a song from an earlier Technosoft game.
- OMAKEBGM00: Thunder Force II - "Knights of Legend"
- OMAKEBGM01: Herzog Zwei - "A Breach of Contract"
- OMAKEBGM02: Thunder Force III - "Venus Fire"
- OMAKEBGM03: Elemental Master - "Blood-Stained Lake"
- OMAKEBGM04: Shin Kyūgyokuden - "Etude of Wind"