Assemblable toy comprising a set alternatively assemblable elements, characterized in that it provides one single configuration essentially tubular main element (10) provided with wheels (11), and a set of pairs of complementary elements (16A&17A, 16B&17B, 16C&17C), disengageable linking elements being moreover provided to the purpose of linking the two complementary elements of each pair respectively to the one (12) and to the other end (14) of said main element, the two complementary elements of each pair having the shape, on reduced scale, respectively of the head portion and of the tail portion of a transportation means, each pair of complementary elements relating to a transportation means of type different from that of the other ones, the main element forming a common central portion of the transportation means defined by said pairs.