The POOF-Slinky 0X3420 Ideal Tetris Matrix fosters patience and problem solving, while provide hours of fun as you test your own ability with single-player strategy challenges. The object of the game is to fill in the outlined shape using the Tetrimino game pieces to re-create the image shown on the Matrix Challenge card. Once the shape is successfully filled in with Tetrimino game pieces, slide the answer booklet out from the game’s compartment to see the solution. The answer booklet shows one possible solution though there can be more than one resolution to each challenge. Work your way through (60) challenges that range from beginner to medium and finally up to expert. All game elements are stored right inside the game housing so you can take it anywhere. Tetris Matrix is based on the world famous video game. Ideal’s Tetris Matrix is designed for a single-player, measures 8-inches by 6-inches by 1-inch and includes a game housing, (60) Matrix challenges, (21) Tetrimino game pieces, instructions and solutions book. Loved by children and trusted by parents for over 100-years, the Ideal brand provides a wide variety of games, activity kits, magic sets and classic toys that parents and grandparents remember from their own childhood years. The POOF-Slinky 0X3420 Ideal Tetris Matrix Strategy Puzzle Game is recommended for children 8-years of age and older. POOF-Slinky is the manufacturer of the world famous Slinky and the top selling POOF foam sport balls in North America, both manufactured in Plymouth, MI and Hollidaysburg, PA. Ideal and Scientific Explorer are other well-known brands, rounding out the POOF-Slinky family. With roots in the toy industry for over 100-years, POOF-Slinky brands continue to grow and broaden. New generations of kids, their parents and grandparents have proven that classic toys never go out of style!