The team essentially split into controller and game sub-teams to maximize the dwindling project time. The game team opted to exhibit the multiplayer and 3-D aspects via Sand Havens, a casual RTS game (Figure 2). Players push down on the surface to raise land so that bad creatures avoid eating good creatures. But since the game conserves mass, raising land simultaneously lowers other areas. Lands that sink below sea level fill with water and threaten the good creatures.