In the first portion of the game, the first thing that needs to be done is to position your koalas on the train tracks. To do this click on one of the koalas at the bottom of the screen. A derail kit will then appear on your mouse cursor. Move the derail kit to the track you'll choose for your koala's station, and then click on it afterwards. Then when the engine of a train passes above your koala, click on the button above his head to derail the train.

Be careful when derailing trains because not all of them will benefit your team. Derailing certain trains can cause you to lose a koala from your team. Also be careful of Police Trains, as they're looking for you and might arrest one of your koalas.

In the second portion of the game you must use the supplies you obtained in the first portion to build a house. To do this just grab a piece from the conveyor belt and click it into the appropriate slot in the house plan. If you pick up the wrong piece just drag it over the trash can to destroy it. Each time you successfully place a piece you are awarded an amount of cash based on the supply used.