Kids fit all the 3-D puzzle pieces into the game grid to create a flat 2-D image in this on-the-go puzzle game! One of the protruding sides of each puzzle piece has one ball, and the other side has two—so depending on how kids orient a puzzle piece, they get more or fewer balls. When they solve a puzzle correctly, all the pieces fit in the grid without any holes! The game is great for developing cognitive skills like concentration, logic, planning, problem solving and spatial awareness. You get a game grid with a transparent lid, 12 puzzle pieces, and a booklet with 120 multilevel challenges and solutions. Game grid measures 3 1/2" x 5 1/2". For 1 player.