per mustang sally at MeSS, TV Guide print edition puts the slip-n-slide for IC this week.

There were two different versions of this challenge run previously, but it has always run in teams. If mustang sally's info is correct, this would be the first time this challenge is for individual immunity.

The first version was run twice, both times for RC: Fiji (E3) and HvV (4)
In this version, one player from each tribe ran/slid down the slide, over which were hanging some numbered balls. Probst would call out a number, players would grab that ball, after which they would make their way to the end of the slide where they tried to shoot the ball into a hoop. First player to put ball in hoop scored point for the team. The only difference was that in Fiji, there was one common slide for both teams, whereas in HvV, each tribe had their own slide.

The second version was run once, for IC: Gabon (E3)
In this version, players ran a relay race down a slide into a lake, where they retrieved floating puzzle pieces. Once they had all puzzle pieces, the first tribe to solve and raise the flag won. The 7-Up challenge this season had many common points with this challenge, though there was no flag, just puzzle solving.