Trevor McFur in the Crescent Galaxy

Cheat Mode
To activate cheat mode, press 1, 1, 9, 3 at the title screen. To use it, use the following buttons on Controller Two while playing.

A = Speed up foreground scrolling
B = Slow down foreground scrolling
C = Fire special weapon without depleting inventory
1 = Power up gun
2 = Cycle through bomb power-ups
3 = Mark other moons as completed
4 = Toggle ship invincibility
0 = Cycle through sound effects
* = Play selected sound effect
L/R = Background scrolling speed
Option = Skip to next stage