RisRas blocks can be of any shape:

Square, rectangle, rod or pillar, cube, prism, triangle, diamond, pentagon, hexagon, star, circle, or even a tree, a person, etc.

Because the connection between the blocks does not consist of one sole point, and because they are extremely easy to join and separate, very young children can play with them.

The blocks have adhesive material on some of their sides

So when the opposing surfaces of this material are joined, the blocks stick together, and it becomes possible to create complex constructions in a highly versatile way.

Each block can depict a section of a drawing, and by combining the blocks, the complete image can be formed, like a 3D puzzle.