Tap a dot and drag a line to another dot to connect them.
The number inside a dot shows how many lines must meet there — when it is satisfied, the dot turns green. A wrong link turns red: tap the red line to remove it and try another pair.
Swipe on empty space to rotate the camera — the puzzle is three-dimensional, and some dots are hidden behind others until you turn the model.
Pinch or scroll to zoom.
Connect every dot correctly and the model is revealed and added to your gallery; larger models are assembled part by part.
Stuck? Use the Hint button to reveal one correct connection. Complete as many models as you can to climb the leaderboard.