Unlockable modes
A number of additional archive items and game modes are available in the game as follows
UnlockableHow to unlockAdditional 3D modesIn Space Harrier 3D select the redblue 3D mode and hold right for a few secondsGame Gear Space HarrierIn the Space Harrier menu select the Sega Mark III version then continue to hold right for a few seconds until the Game Gear version appearsJapanese Master System startup screen with Space Harrier musicIn the archive mode for Sega Mark III Space Harrier select the last image then press StartSpace Harrier sheet musicComplete the arcade version of Space Harrier The sheet music will appear in the archive section for that game