The castaways have to cross a obstacle course, gather wooden blocks, and stacked them into a tower. The first tribe to finish stacking their tower wins.
History
In Survivor: Samoa, the castaways raced across a net run carrying wooden blocks to a platform. When all of the blocks were at the platform, they would need to be stacked into a tower. The castaways would then cross a rope bridge to a second platform where two nets would be tied together holding more wooden blocks. After the nets were untied, the blocks would have to be stacked into another tower. Foa Foa finished their second tower first after a very close race against Galu, winning their first and only immunity.
The challenge re-appeared in Survivor: Kaôh Rōng, when the players had to cross a obstacle course, collect wooden blocks, and stack them into a tower at a platform. Chan Loh lost the lead they had on the obstacle portion of the challenge, but managed to finish their tower first after Gondol's first attempt to stack their blocks ended in a tumbling defeat, barely winning immunity.
The challenge appeared as the third Immunity Challenge in Heroes vs. Healers vs. Hustlers. The players had to through a series of obstacles, use sandbags to knock blocks off the top of a ledge, and stack them into a tower. Soko knocked off all their blocks first, but failed to notice that they left one block on the ground after stacking their tower. This allowed Levu to come in first. Soko recovered after Patrick Bolton cost the Yawa tribe by refusing to let anyone else try to throw sandbags, sending Yawa to their second straight Tribal Council.
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