Instructions
 
Unlock the "Fishing" mini-game by finding the hidden chest in Level 4-1. This chest is on the first screen and is accessible through the top right corner of the map. The chest, like all hidden chests, is located behind a large door. 
Unlock the "Drawing" mini-game by finding the hidden chest in Level 6-1. This chest is located on the third screen and is accessible by falling off the ledge on the right side of the screen. 
Unlock the "Diving" mini-game by opening the hidden chest in Level 7-1. This chest is located on the screen after you fight the "Devil" mini-boss. Find the chest by using the Y-Zoomer to reach the top of the screen and float down to the left. 
Select "Mini-Games" from the main menu to play any mini-game you have unlocked.