Abstract: A constructional toy comprising a plurality of elements which can be assembled together to form a variety of three dimensional structures. The elements include a triangular prism shaped brick element comprising a plurality of walls. The walls define a male mating side having a male engagement feature which extends from the brick. The walls also define a female mating side which defines a cavity configured for receiving an engagement feature of the same configuration as provided on the male mating side.

Abstract: A constructional toy comprising a plurality of elements which can be assembled together to form a variety of three dimensional structures. The elements include a triangular prism shaped brick element comprising a plurality of walls. The walls define a male mating side having a male engagement feature which extends from the brick. The walls also define a female mating side which defines a cavity configured for receiving an engagement feature of the same configuration as provided on the male mating side.

Abstract: A game or toy comprises a plurality of rectangular elements each having a substantially square upper face and a substantially square lower face interconnected by four rectangular side faces. The upper face of each element has an alphanumeric character printed on it or molded onto or into it. The side faces of each element are dimensioned so that the elements are free-standing on any side face. Two adjacent side faces of each element have projecting half star shaped connectors means formed on them, while the other two adjacent side faces have complementary grooves shaped to receive and retain the retain the projecting connectors of another such element, so that the elements can be joined together side face to side face in two mutually perpendicular direction to form a two dimensional crossword or number game. Auxiliary connecting elements are provided for connecting the rectangular elements together with their upper faces at right angles, so that the game can be played in three dimensions.

Abstract: A game or toy comprises a plurality of rectangular elements each having a substantially square upper face and a substantially square lower face interconnected by four rectangular side faces. The upper face of each element has an alphanumeric character printed on it or moulded onto or into it. The side faces of each element are dimensioned so that the elements are free-standing on any side face. Two adjacent side faces of each element have projecting half star shaped connectors means formed on them, while the other two adjacent side faces have complementary grooves shaped to receive and retrain the projecting connectors of another such element, so that the elements can be joined together side face to side face in two mutually perpendicular directions to form a two dimensional crossword or number game. Auxiliary connecting elements are provided for connecting the rectangular elements together with their upper faces at right angles, so that the game can be played in three dimensions.