Shantytown is a single-player Half-Life 2 conversion made within a five month period. In this imagined future reality, the earth has been almost overtaken by a jungle of poisonous mushroom fungus, and humanity has taken refuge in towering vertical cities. The story starts on the 10th floor of one of these towering cities. You control the heroine of the story, Ellie, a young inventor whose floating robot companion follows her wherever she goes. Ellie's house has come under a deluge of trash from the processing facility above her house. Your mission is to stop the trash from raining down upon Ellie's roof. Along the way, you will talk with city locals to find a way to save her home.