Simmotion

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

Rules
Each castaway, 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.

Trivia

 * This challenge has the fewest number of participants of any recurring challenge, with five: Erinn Lobdell, J.T. Thomas and Stephen Fishbach (in ) and Christine Shields Markoski and Stacey Powell (in ).