The Koala Construction Company is in the business of building houses. They need you to lead the charge as they build houses and derail trains to gather supplies.
Your aim is to guide tadpole to his home and avoid all obstacles on the way. Hold LEFT MOUSE BUTTON to swim up, release the button to swim down. Avoid hitting Rocks, Algae and Waterbugs. Be sure to collect those bubbles, they will save you life many times.