The Fallback is a trick that makes a domino rally longer. It is used to reverse the direction of falling without using much space for curves. ORIGIN: The Fallback was originally invented by Limeiron in 2007, However, the bottom line often fails, making the trick less reliable, As a result, a new version of the trick was invented by Annodomino2007
FALLDOWN : When the domino on the end of the tower falls on the domino than leans beside the tower, the tower topples thus reversing the direction of falling.
Being triggered at the top, the domino line falls and barely hits the next one, resulting in minimal weight being put on the bottom line. The last domino of the top line is a horizontal one, which is hit, and adds weight to the leaning dominoes, which in turn, starts the bottom line. An exiting line can be made with a horizontal domino being placed between two of the bottom line dominoes, a line split can bemade from there.
TRICK RECORD by dominololze , it had 1000 dominoes with a length of 26 feet .
Also, there is a very detailed tutorial of making fallbacks on YouTube by xXDominoMasterXx here .
Fallback