Domino Effect

Domino Effect is a recurring challenge wherein contestants set up dominoes while weaving in and out of traps.

Rules
Players must stack all of their pieces like a line of domino tiles while avoiding tripwires that would topple the tiles that were already stacked. Once all of the blocks have been properly stacked, the castaway would start a chain reaction which would be enough to trigger a mechanism which will release a ball rolling to a bowl, releasing a flag. The first castaway to raise their flag would win.

The same rules apply in the Redemption Island version of the challenge, but instead of raising a flag, the goal is drop the ball on a tile at the end of the contraption. The first to do so wins.

History
This challenge debuted in  with an additional first round where the castaways would race across a series of balance beams carrying a bag of puzzle blocks. The first two castaways to bring all three of their bags would go to the final round, along with Corinne Kaplan, who had received an advantage of a free pass from the first round. In the final round, players stacked their blocks like domino tiles across a bridge which, when set off, would raise a flag. The castaways also had to move through tripwires. Ken Hoang defeated Corinne and Matty Whitmore to win immunity.

This challenge reappeared in, where Matt Elrod beat Russell Hantz in the second Redemption Island Duel, permanently eliminating Russell. Russell left the game in tears.

In, the challenge returned as the second Redemption Island Duel, between Candice Cody, Marissa Peterson, and Rachel Foulger. Candice easily won the duel, keeping herself alive. After over 45 minutes of failed attempts, Marissa finally beat Rachel, eliminating Rachel for good.

Trivia

 * This is one of the five challenges which have appeared more times as a Redemption Island Duel than it has as a regular challenge.
 * The other four are A Leg Up, Block It Out, Snag, Drag & Bag, and Playing Bridge.
 * It was used as the second duel in both seasons where it appeared as a duel.
 * This challenge has been used in increments of five seasons, starting with season 17 in, followed by season 22, and season 27,.
 * Every time the challenge was used, one of the winners was the youngest person of their gender (Ken Hoang and Matt ware the youngest males, while Marissa Peterson was the youngest female).