Only free tiles that are not covered or blocked on the right or left are allowed to be removed. Mastering Sight Words Mahjong will require word skills, strategy and a little luck. This a great game for kids learning and practicing sight words or for anyone just wanting a new type of Mahjong. This game offers lots of customizing options which keeps it fresh and interesting for kids. Sight words include: Preschool, Kindergarten, 1st Grade, 2nd Grade and 3rd Grade. + Preschool To 3rd Grade Word Sets + Audio Of Each Sight Word + 24 layouts + 15 background pictures + 15 tile designs + Hint and Undo board options + 6 remove tile effects + 6 load tile effects