Abstract: The invention relates to planarly connectable toy bricks comprising an unilaterally open, box-like hollow body and plug-in pins at the bottom outer side and bottom domes on the bottom inner side. In order to achieve increased frictional force both plug-in pins on the upper side of the toy brick and bottom domes on the bottom side of the toy brick are designed as an n-rectangular straight prism having parallel and equally long side edges. Ribs are designed as double-webbed retaining protrusions, the plug-in pins have through-holes of different shapes at the bottom as well as stabilizing webs which extend between the retaining protrusions and parallel thereto. A click system is provided, which ensures that user has apart from the visual and haptic perception an acoustic perception of the completion of the clamping of two toy bricks.

Abstract: The invention relates to planarly connectable toy bricks comprising an unilaterally open, box-like hollow body and plug-in pins at the bottom outer side and bottom domes on the bottom inner side. In order to achieve increased frictional force both plug-in pins on the upper side of the toy brick and bottom domes on the bottom side of the toy brick are designed as an n-rectangular straight prism having parallel and equally long side edges. Ribs are designed as double-webbed retaining protrusions, the plug-in pins have through-holes of different shapes at the bottom as well as stabilizing webs which extend between the retaining protrusions and parallel thereto. A click system is provided, which ensures that user has apart from the visual and haptic perception an acoustic perception of the completion of the clamping of two toy bricks.