30 Continue code, do not use continues code, sound test code, debug menu code, and difficulty setting code for Blazing Lazers on the TurboGrafX 16.
30 Continues: At the title screen, press and hold SELECT and press and hold RUN until "Area 1" text appears.
Do not use continues: When the continue menu appears after game over, press SELECT 3 times then press and hold SELECT and press RUN.
Sound Test Mode: During game intro before the title screen, press and hold SELECT, tap LEFT and RIGHT on the D-PAD until SOUND 01 appears on the screen.
Debug Mode: Enter sound test mode. Press I, II, and repeatedly tab SELECT until a graphic appears indicating that the game is in debug mode. Sometimes a graphic may not appear, and you'll be able to tell you're in debug mode due to the fact that the sound test can go past the 40 range.
Level Select: Enter debug mode as mentioned above. Select sound 00 - 09 to select a stage then press RUN.
Extra Lives and Bombs: Before pressing run to enter a level in level select mode, hold down I, II, and SELECT, then tap RUN.
Invincibility: This code hardly works, but to better your chances, do this immediately when you turn the system on. Enter debug mode as mentioned above, go to SOUND 77 and press II, UP, DOWN. If it works the game will reset itself and you'll be invincible.
Half way through game with no music, and extra satellites?: Ok I don't know what they mean by extra satellites, but enter debug mode, go to SOUND 83, press II, then press RUN.
Difficulty mode select: For "Normal Dog" and "Hard Human" settings, set your auto fire settings to the fastest speed, at the title screen, hold I, II, and SELECT until the debug menu appears. For "Super Mania" or "God of Game" set your auto fire settings to the lowest setting. Press select in the menu to change the difficulty settings.