Abstract: The present invention relates to a system for elastically assembling two identical pieces, wherein one of the ends of a piece comprises two lugs between which is disposed a bar in the form of an arc of circle, while the opposite end of this piece comprises a flange provided with two notches in which are engaged the lugs of a second, identical piece while the convex face of the bar abuts against the inner face of the flange. Beads on one piece engage in notches of the other piece to complete the assembly. The invention is particularly applicable to games and toys.