From the publisher's website: Tilez! (rhymes with 'smiles') is a color-matching and spatial relations puzzle game that comes with 80 all-different 'L'-shaped tiles. The object is to select a tile from your rack and place it on the board such that it matches as many existing neighboring colors as possible. As the game progresses the board becomes a mosaic of color with ever-greater challenges and ever greater opportunities to score.Includes 80 magnetic L-shaped tiles, 4 custom racks, gameboard, scoring markers, and instructions.Tylz! is the travel version. No racks or box, but otherwise the same rules, components and game play. - BoardGameGeek