This game is played by placing a marble in one of the tiles and then sliding a tile into an open space. You need to be thinking about strategy on two levels! The goal is to have 5 in a row and to prevent your opponent from getting the same. The sliding of the tiles is the real key to winning! SlideLine is a new and exciting game jointly released by Developer4Lease.com and Dov Nesis, acclaimed game developer. Dov is best known for the game / puzzle known in its original trade name as Digi-Disc (Know as well as" Word-Spin"," Scramble"," DiscOnary) that won many international awards (Winner of a 2001 Parents Choice® Award, a winner of the Oppenheim 1996 Gold Seal Award, the Best Mind Game of 1995 from MENSA, the 1995 Game of the year from the Australian Toy Association). Throughout his career Dov has engaged in a substantial number of mergers and acquisitions whereby my inventions (Such as: TwistedPuzzle, Mona Lisa Codebreaker, TwistOmania, Radicas Click-Sixs and etc.) were licensed to variety of international toy companies like Hasbro, Mattel, Radica ,Eureka BV, Educational Insights, Character Group, GeoSpace, SpinMaster and more. With this kind of award winning history you know this game is going to be great!