A domino wall features a similar structure as a 2D-Pyramid but does not get narrower towards the top. As a result, there is no exposed single domino on each side. Therefore, toppling involves the removal of a domino somewhere in the middle, which is best to achieve by connecting it to a mousetrap with a tight cord. The mousetrap itself should be fixed to the ground using double-sided tape to ensure that the toppling mechanism works.

Building a wall is similar to a 2D-Pyramid, but each layer features more and partially vertical dominoes on the sides to ensure that the structure does not get narrower towards the top. The trickiest part is setting up the toppling mechanism, which can easily lead to accidents in terms of hurting oneself or toppling the structure too early.