Complete the indicated task to unlock the corresponding mini-game.

Cooking: Collect the Gashapon hat on mission 17.
Flower: Collect the Zapaton hat on Creatures Of The Sand, then make it rain and kill the purple slug.
Mountain: Collect the Kimpon hat on mission 14.
Smith: Collect the Kampon hat on Search For A Lucky star. Hunt when it is not raining and talk to star. Note: You must collect the black star first.
Tree: Collect the Pakapon hat on mission 2.