Abstract: A stacking block system includes a plurality of blocks, each having a top face and a plurality of side walls extending downwardly from the top face. At least one coupling knob extends upwardly from the top face and has a substantially spherical upper part and a substantially cylindrical lower part. A tubular coupler or flange extends downwardly from the top face and beyond the side walls is complementary to the coupling knob, enabling coupling of two blocks. The tubular flange guides the coupling knob to enable coupling of two blocks, even when the blocks are tilted with respect to each other.

Abstract: A stacking block system having stacking blocks which have a body part which is provided with coupling knobs with a mutual uniform modular distance on its upper surface and is downwardly provided with coupling means which are complementary with respect to the coupling knobs on the upper side and are adapted to be coupled with the coupling knobs. According to the invention, the blocks are additionally provided with one or more spacers downwardly, which are designed such that when two stacking blocks are stacked on top of each other, the body parts of the stacking blocks will be spaced from each other along their entire periphery. This provides a gripping edge or a gap between two blocks stacked so that it is particularly easy to grip the blocks when a stack of such blocks is to be separated.