Dragon Buster

Cheats

Codes
Harder Gameplay

Enter at the title screen.
Code                    Effect
Right, Down, Up, Left, Right, A, B, Start	Harder Gameplay


Second Quest

Enter at the title screen. You'll know the code was entered properly if the background color of the map is red instead of green.
Code                    Effect
Right, Down, Up, Left, Right, A, B, Start	Second Quest enabled