Abstract: A toy construction set featuring a base plate with upstanding connecting circular plugs with a plurality of different shaped blocks is disclosed. The blocks have a plurality of shapes to include a square, a half square, a triangle, a circle, and a half circle. The tops of these blocks may have similar plug connectors or may be flat. The underside of the blocks will have a plurality of receptacles to engage plugs underneath. The receptacles will be either ribs converging from the sidewalls or will be a curved portion of the sidewall itself acting to positively engage the plugs beneath, or a combination of both.