Rummikub is a tile-based game that blends elements of the card game Rummy with Mahjong. Players use numbered tiles to create runs (consecutive numbers in the same color) or groups (the same number in different colors).  The game helps develop STEM skills and strategic thinking. New, Sealed. This is easier for players of all ages to play versus the card game in which you have to keep track of & hold tons of cards in your hands without any cards getting hidden from your sight or accidentally exposed to other players.