The goal is to exchange hexagons to connect all the colored nodes. This online puzzle game has 72 levels that will test your brain and patient. Have fun! Knot Logical Game, puzzle game, brain teaser, logic game, online puzzle, connect hexagons, spatial reasoning, challenge, brain workout, mental game, 72 levels, casual game, mobile game, strategy game, problem solving, geometric puzzle, node connection, cognitive skills, brain training, addictive game