Adventure Island 2

Cheat mode:
Wait until Higgins is hit by the coconut on the title screen. Then, press Right, Left, Right, Left, A, B, A, B to access the level selection screen. Press Select at the level selection screen to enter Test mode, which includes a sound test and other options.

Continue game play:
Locate the fifth skull in the first cave on the first island. Walk past the skull, them up and down to discover a hidden room. Collect the Hudson bee logo from this room. Hold Left and press Start at the game over screen to continue game play with all prior items at the last level played.

Hint: Using hammers effectively:
Always use your hammers in a rapid fire sort of way. If they disappear and make a strange noise, jump at that spot. Your character will get an egg which contains a level skip, inventory item or bonus level.
Information in this section was contributed by Jesse Smith.

Hint: Collecting food:
Stay low to the ground with the pterodactyl, as to collect food.
Information in this section was contributed by Jesse Smith.

Hint: Obtaining eggs from birds:
Try to shoot most birds over the ground as some of them carry eggs.
Information in this section was contributed by Jesse Smith.

Hint: Defeating the Fern Island Boss:
When you encounter the Boss, stay far enough away so it does not start attacking you. Then, start throwing hammers at him. The Boss will accumulate all the damage that was dealt.
Information in this section was contributed by Todd Schoolcraft.