buy aliens to make as much money as you can. Worker alien: he is a little chill guy and he takes his time and gives you one coin at a time. Heavy Worker: he is a slow fellow and takes 5 rocks at a time. Fast worker: he is always in a rush and gives you 1 rock at a time. Mega heavy: now he is a reeeaaaally slow one but he gives you 15 rocks at a time! Cookie worker: he likes baking cookies for fellow aliens and his cookies are so good that they speed aliens up and you only need one of them but they do go away after a little while