This tower is wider than the simple tower and is therefore considerably more stable at greater heights. Toppling requires the removal of a single 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 complex tower involves repeating four different types of layers as shown below. 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.