The invention relates to a game element (1a), preferably of a board game box (B1, B2, B3) comprising: a central portion (10a) comprising four sides (11a, 12a, 13a, 14a); side portions (15a, 16a, 17a, 18a) each connected to one side (11a, 12a, 13a, 14a) of the central portion (10) so that the side portions (15a, 16a, 17a, 18a) can be moved from a first position (P0) to a second position (P1): the first position (P0) being a position in which said member (1a) is flat; the second position (P1) being a position wherein the side portions are raised relative to the central portion (10a) so that said member (1a) forms a game board for a board game.