A separable assembly includes a cellulose member having a side surface and an end face forming an edge with the side surface. The cellulose member defines an elongated sliding track that extends from an end opening at the end face and has a T-shaped transverse cross-section. The cellulose member defines a side opening along the sliding track at the side surface of the cellulose member. The sliding track further defines a detent recess spaced from the end surface and extending into the cellulose member. The separable assembly includes a rigid plastic member having an edge configured to be received within the end opening of the cellulose member and slid along the sliding track with the plastic member extending through the side opening. The plastic member includes a detent protrusion configured to engage the detent recess.

A puzzle building block capable of changing light-emitting areas includes a building block board, a circuit board, light-emitting elements and building bricks. The building block board includes a plate body and connection portions. The connection portions are disposed on the top surface of the plate body. The circuit board is adjacent to the bottom surface of the building block board. The light emitting elements are disposed on the circuit board, and the light emitted from the light emitting elements passes through the building block board via the connection portions. The building bricks are fitted with the connection portions and shield the corresponding connection portions, thereby forming letters or patterns. Therefore, the light emitted from the light-emitting elements can form various letters or patterns on the top surface of the building block board. The present invention also provides a puzzle building block assembly including the above-mentioned puzzle building blocks.

The invention relates to a game board (1) for a board game, having a flat bottom part (2), which can be rolled up corresponding to a roll axis (A) into a transport position and has at least one first edge side (2.1) as well as a second edge side (2.2) opposite the latter, which extend skew to the roll axis (A), a first side part (3) connected along the first edge side (2.1) to the bottom part (2) as well as a second side part (4) connected along the second edge side (2.2) to the bottom part (2), which are designed strip-like and can be adjusted between a use position raised relative to the bottom part (2) and an intermediate position parallel to the latter and can be rolled up from the intermediate position together with the bottom part (2).
In order to make a travel board game available with improved functionality, it is provided according to the invention that the first (3) and second side part (4) in each case have a bistable spring band (7), which extends in a first stable state for stiffening the side part (3, 4) parallel to the adjacent edge side (2.1, 2.2).

A device, method, and system for developing, managing, acquiring and playing electronic board games. Game developers may illustratively access one or more electronic game board, game piece templates and/or other game development application software from a game server to design and develop electronic board games. Such electronic board games may then be acquired by game players in the form of full, limited and/or modifiable versions. A game service module of the game server makes a number of electronic board game related services available to game players for managing, playing and acquiring electronic board game collections and/or for enhancing or facilitating electronic board game playing.

A separable assembly includes a cellulose member having a side surface and an end face forming an edge with the side surface. The cellulose member defines an elongated sliding track that extends from an end opening at the end face and has a T-shaped transverse cross-section. The cellulose member defines a side opening along the sliding track at the side surface of the cellulose member. The sliding track further defines a detent recess spaced from the end surface and extending into the cellulose member. The separable assembly includes a rigid plastic member having an edge configured to be received within the end opening of the cellulose member and slid along the sliding track with the plastic member extending through the side opening. The plastic member includes a detent protrusion configured to engage the detent recess.