Simmotion

Simmotion is recurring individual challenge that originated in, and reappeared in and. The challenge requires strong mental focus and endurance.

Rules
Each castaway, usually with one hand tied behind their back, drops a ball into a metal chute. The ball travels down a spiraling metal track and exits out of one of two points (a turnstile gate in the middle of the track causes the balls to alternate exits). The contestant must catch the ball and drop it back into the chute at the top. At designated intervals, an additional ball is added to the track until eight balls are simultaneously in play. If a ball exits the track and is not caught at any time, the castaway is eliminated from the challenge. Last person standing wins.

History
The challenge debuted in as the Final Immunity Challenge. Erinn Lobdell was the first person to drop out of the challenge, followed by Stephen Fishbach. As such, J.T. Thomas won the challenge, immunity and a guaranteed place at the Final Tribal Council.

In, the challenge was used as a pre-merge Duel. Christine Shields Markoski outlasted Stacey Powell to win the challenge and remain at Redemption Island, whilst permanently eliminating Stacey.

In, it appeared as the Final Immunity Challenge. Kelley Wentworth dropped out first, followed by Tasha Fox. It came down to Jeremy Collins and Spencer Bledsoe with Jeremy winning.

Trivia

 * Although the maximum amount of balls that could be in play is eight, the challenge has only ever lasted long enough for five balls to be in play.
 * Interestingly, when the challenge was played with two people it lasted to three balls, with three people it lasted four balls, and with four people it lasted to five balls.
 * Both times this challenge was used as the Final Immunity Challenge, the winner of the challenge became the Sole Survivor in a unanimous vote.
 * This challenge was created when a prop maker, Simon Ross created a smaller version of the challenge when Dan Monday saw it and decided to make it an large scale version.