Aether focuses on exploration and allows the boy and his companion to visit different planets in space. They can move around by attaching the monster's tongue to clouds and other objects and then swing to gain height and travel around. Clicking and holding the left mouse button attaches the tongue, and it is released by letting go. Once in space, gravity becomes less of an issue and there are five planets to visit. Some have inhabitants, but all of them have a puzzle to complete, usually to make the planet a better place.