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The Chamber Challenge

Daily facts and stats about chambers in science, nature and music, plus real challenges to put them to work.

Warm-up questionNot ranked · tap an answer

In a rocket or jet engine, where is the fuel burned?

Level1Rookie
XP
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Streak0days
LeagueBronzeweekly
A group of female musicians playing string instruments during an indoor concert.
Photo: cottonbro studio / Pexels
Daily #7Resets at midnight UTC

Today's round

  • 5 questions
  • 20s each
  • 0 played today

One ranked attempt per day. Practice as much as you like.

Challenges

Join one, log your days or post your proof. Finishing earns XP and the Finisher badge.

By the numbers

Live counts from ChamberChallenge.com. All arena stats →

Facts in the pack12
Visitors, 30 days65

Leaderboard

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Badges

Earned on any arena, shown on your profile everywhere.

First RoundFinish your first daily round.
FlawlessAnswer every question in a round correctly.
LightningA perfect round in under 25 seconds.
On a RollPlay 3 days in a row.
Week WarriorPlay 7 days in a row.
UnbreakablePlay 30 days in a row.
ExplorerPlay daily rounds in 5 different arenas.
GlobetrotterPlay daily rounds in 25 different arenas.
PolymathPlay daily rounds in 5 different topics.
In the ArenaJoin your first challenge.
FinisherComplete a challenge.
RecruiterInvite a friend who finishes a round.
CaptainInvite 5 friends who finish a round.
PodiumFinish a day in an arena's top 3.
ChallengerReach level 10.
Profile SavedSave your progress with an email.

Save your progress

Add your email to keep your level, streak and badges if you switch devices, and carry them to every iChallenge arena. One email when you save; no spam.

Questions

How do I start?

Play today's quiz round, post your score, and start a streak.

What do I earn?

XP, levels, streaks and badges. Save your progress with an email and it follows you to every arena on the iChallenge network.

How does the daily round work?

Everyone on this arena gets the same five questions each day, from easy to hard. You get one ranked attempt; practice rounds are unlimited.

How is my score calculated?

100 points per correct answer, up to 50 more for answering quickly, a combo multiplier for answers in a row, and 150 bonus points for a perfect round.

Is it free?

Yes. Playing, streaks, badges and leaderboards are free. Some challenges carry a sponsor-funded prize; the challenge card shows it when one is funded.