Players take turns placing numbered tiles in runs (consecutive numbers of the same color) and groups (three or more of the same number in different colors), rummy style. It's easy to learn, but packed with strategy - the "board" changes all the time as players adjust the tiles on the table. The Joker tiles add to the fun and can be used as any color or number. Be the first player to play every tile on your rack to win! Reinforces STEM skills like sequencing, pattern recognition and planning. Rummikub includes 106 high-quality plastic tiles, 4 plastic tile-holder racks, and complete instructions. For 2-4 players, ages 8 and up.