Your goal is to make a habitable planet by adding enough Water,
Atmosphere and Clouds to reach a temperature of about 15C (58F). You
can mix and match, add or remove.
Drag (and drop) an item from the right side to the left to add that element
Drag (and drop) from the left are back to the right to remove that element
Note -- you do not have to drop elements on the planet, just to the
left of the vertical bar.
Contest! Who can make the planet livable in the shortest number of years???