Silhouetted against a series of colorful sunsets and serene introduced by a paragraph or two of text, NightSky is a physics puzzle remarkably beautiful and the atmosphere involves rolling a ball from left to right screen. Levels often bring new rules and challenges - sometimes with a few words of explanation, but not often - you learn to interpret the landscape crudely drawn and mechanical devices that help you maneuver your small ball strangely pleasant in the end. There are vehicles to drive, to reverse gravity, and a button that allows you to join the inclined surfaces more effectively, but they are not immutable, turning in and out of circumstances. The puzzles are simple solutions exquisite always directly in front of you, even if it is not immediately obvious that a visit would still be possible. There may be moments of frustration when two sectors particularly tedious entering in the same checkpoint, but is largely a good trip.