Unlimited lives: Press Left, Up, Right, Up,
Right, Down, A at the title screen.
Jump to level 3-1: Collect nine lives and surf to the first waterfall
in level 1-3. Build up speed and jump off to the right side of
the waterfall that is closest to the top of the screen. Move away
from the waterfall while airborne to land near a second waterfall.
Move down that waterfall to jump to level 3-1.
