Well you control these little guys ( they are the pikmin) right here:
Those are all the pikmin 2, well, except for a special one found in caves, but I am not going to reference them if you want to play it. You use the little guys to attack enemies about 10X you size, the largest probably being 150X your size! This is what a pikmin battle looks like:
The pikmin will then take the enemy they have killed and bring it back to their ship, were more pikmin are raised out of doing that! That is the life cycle, but what is the point of the game you may ask. In the first game your goal is to fix your ship that has crashed on the planet and in the second it is to gather treasure to repay the company you work for's debt. If you want to know more about the game watch reviews. I highly suggest pikmin to any person, especially if they are a fan of action, or strategy games.