A number of additional archive items and game modes are available in the game, as follows:
Unlockable How to Unlock Additional 3D modes In Space Harrier 3D, select the red/blue 3D mode, and hold right for a few seconds. Game Gear Space Harrier In the Space Harrier menu, select the Sega Mark III version, then continue to hold right for a few seconds until the Game Gear version appears. Japanese Master System startup screen with Space Harrier music In the archive mode for Sega Mark III Space Harrier, select the last image then press Start. Space Harrier sheet music Complete the arcade version of Space Harrier. The sheet music will appear in the archive section for that game.
Contributed By: jamess.
Space Harrier Cheats
3 Extra Continues
At the Game Over screen, press Down+Left+1.
Effect Code 3 Extra Continues Down+Left+1 at the Game Over screen.
Contributed By: Mezmorize99.
9 additional Continues
After the game is over and you can see the ''Game Over'' letters,
press Up, Up, Down, Down, Left, Right, Left, Right, Down, Up, Down, Up on the control pad.
Contributed By: Atombender.
Press Right, Left, Down, and Up on the title screen.
If you put the initials "ERI" in all seven spots on the high score list (done by scoring over a million points in seven games without turning the console off), you will get a strange message.
At the sound test screen (accessible by pressing Right Left Down Up at the title screen) choose the following sound tests: 7, 4, 3, 7, 4, 8, 1. You will get a secret options screen which will allow you to select new difficulties, change the control, and use a jet instead of your normal character.
Contributed By: Frogacuda.
Enter the following passwords.
Effect Password Level 10 HGDA Level 11 AGEC Level 2 EAGF Level 3 CHFA Level 5 DGBC Level 6 HBGA Level 7 FBHE Level 9 BFCH
Hold the D-pad in any direction, hold start, and then turn the Gamegear on.
Hold down the 2 button when turning on the Game Gear; the word ''EASY'' will appear.
Hold the 1 button when turning on the Game Gear; the word ''HARD'' will appear.
Space Harrier 3-D Cheats
Continue gameplay when game is over
Get to the Gameover screen, and press Up, 2, 1, 2, 1, 1 quickly to start playing the game again from where you left off.
Get to the Gameover screen, and get a ranking over 6th. Put in your name as 'Level' on control pad 2.
Play in 2D
Enter ''THREE'' as your intials on the high score screen.
Contributed By: FriedMilk.
Get to the Gameover screen, and get a ranking over 6th. Put in your name as 'Sound' on control pad 2.
Access the sound test (by inputting "SOUND" using the second controller at the high-score screen, as noted). Upon entering the sound test, select the sounds in this order: 7, 4, 3, 7, 4, 8, 1. You will receive an odd message referring to how this code no longer works in this edition of the game.
Space Harrier II Cheats
Secret Option/Sound test
Wait for the title screen to appear, then hold the A button on Controller 2
Contributed By: shadowcore76.
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