Our World, Other Worlds

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Three rounds: Quick Start, Risk or Reward, and a final wager. Questions have a 20-second answer clock; the final question has 30 seconds. There is no pause.

Use each lifeline once: 50/50 removes two wrong answers; Ask the Hosts removes one. Only one lifeline per question.

Safe earns 100 points without a loss. Bold risks 250 points and needs a 250-point balance. All In doubles or loses your balance and needs more than 250 points. The final wager uses 50-point steps.

The server scores this episode. Connection loss ends it; start again to reconnect.

About 1 minute with sound off at a quick answering pace. Allow longer with narration. About this estimate

Show icon for Our World, Other Worlds Our World, Other Worlds

Test your knowledge of how Earth is different from other planets.

Sample questions


  1. Mars once had running water that carved canyons and other features into its surface. What happened to the water?
  2. Which circumstances could end life on Earth?
  3. Exoplanets that have a lot of volcanic activity and exist in systems with many asteroids are bad prospects for looking for extraterrestrial life.

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