Cube Crisis
Also known as Sled Zeppelin
How it works
Gather scattered pieces and assemble them into a complete three-dimensional cube. First to build it wins — a pure puzzle with no balance or brawn to hide behind.
Why it's iconic
One of the show's signature brain-only tests — slotted into reward challenges and immunity challenges alike, it's quietly decided more games than any brawl ever has.
- Type
- Focus
- Stakes
- Reward or immunity
- Appearances
- 4 seasons
- Status
- Still in rotation
Where it's run
Every season that has staged this challenge — 4 in all.
More focus challenges
Simmotion
Reward or immunityDebuted Season 18
Catch balls as they spit out of a spiraling metal track and feed them back in — with one hand tied behind your back — as more balls are added over time. Drop one and you're eliminated.
Blind Leading the Blind
Reward or immunity
One sighted caller per tribe stands on a platform and shouts directions to blindfolded teammates, steering them around a maze-like course to collect scattered pieces — then the whole tribe solves a puzzle.
Stacked Up
Reward or immunityDebuted Season 32
Standing on a wobbling balance beam, use a long-handled fork to ferry stacks of balls across and set them on a series of stands. Topple the stack and you start over; finish first to win.