To provide a three-dimensional three stone line-up game device wherein pieces can be three-dimensionally placed, whereas a conventional three stone line-up game is performed only on a flat plane.

Three game-field plates (1), on each of which mark lines (7) are formed crosswise, adjoining lines being spaced apart from each other by about 3 cm, are disposed horizontally parallelly so as to be vertically spaced apart at the same intervals as the lines (7). The plates 1 are then placed between two oppositely oriented support plates (2) so as to be combined therewith in such a manner that convex Magic Tapes (R) 3 provided respectively on the opposite edges of each plate (1) are fitted respectively in concave magic tape (4) provided on the opposed sides of the plates (2), whereby the plates (1) are firmly combined with the plates (2).