Extra lives:
Hold Down + A + B and press Start when the title screen appears. Game play will begin with five lives. Note: This code may be re-entered with each continue.

Expert mode:
Hold A + B and press Start at the title screen.

Hint: Extra lives:
Continuously attack the attack the long beaked crows in level 2 until they fly off the screen. Repeat this approximately five times for an extra life. This may be done multiple times.