Sega Master System Cheats - R-Type

Continue game play:

Sweep the D-pad in a clockwise Full-Circle while the countdown timer is running at the continue screen. Up to twelve continues may be added. Alternatively, enter the sound test option and play sound effect "62" three times. Begin game play and sweep the D-pad in a clockwise Full-Circle at the continue screen. Up to ninety-nine continues may be added.

Sound test:

Sweep the D-pad in a counter clockwise Full-Circle at the continue screen.

Unlimited continues:

Select sound "00" in the sound test mode. Hold 2 and press Left on controller one. The selected sound will change to "95". Press 1 and select each sound until sound "00" is selected again. After sound "00" is selected, hold 1 to resume the continue countdown. Sweep the D-pad in a clockwise in a Full-Circle to gain an unlimited number of credits.

Advanced sound test:

Hold 2 and press Right to play up to ninety-five sound effects from the game.

Invincibility:

Hold Down/Right on controller one and Up/Left + 1 on controller two and turn on the Sega Master System. Release the buttons at the title screen.