Domino Wall

A domino wall is, basically, a wall made out of dominos. There are 2 kinds, wall, and speedwall. Building a wall is basically just like a Domino Pyramid. A speedwall's domino set structure looks like a ruin pillar.

Wall

 * 1) First, simply do steps 1-2 of the 2D pyramid.
 * 2) Next, add two dominos standing in the last end of the wall structure.
 * 3) Repeat steps 1-2.
 * 4) Enjoy the falldown!

Speedwall

 * 1) Make two dominos stand on the end.
 * 2) Put a domino laid flat on the top of the two.
 * 3) Repeat this process and put the finished set structures on top of each other, looking like a cut pyramid.
 * 4) Enjoy the falldown.