Skuljagger

Press R, L, R at the island map and text at the beginning of each level. Clues to the secret areas will be displayed.

Level - Password

2 - CRUEL MAN CRUEL BIRD
3 - CLAW IS MEAN DOCK
4 - BIG WILD ANGRY FLY
5 - FLY HOME LAZY WORD

Lose all your lives except the final one (so it says Player x 1 at the top). Make sure you are holding 0 red and 0 green jewels. Get to the end of and level, but do not grab the giant blue gem. Wait until an enemy gets close and jump. Time your jump so that you collide with the enemy and the ending gem at the exact same time. Your lives will then say Player x 0 but you will perform the level ending pose. You will move onto the next level without dying. The next time you die, your lives will change from 0 to 99.

This will only work if you are on your last life. This happes because the counter goes down the instant you collide with an enemy, but you are not called dead by the game until you fall through the floor. If your counter says 0 when you fall, you get game over, but if you are already on 0, it automatically starts the count at 99.