7-Day Daily Round Streak
Play one five-question round every day for a week. Check in after each round.
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Challenge · Facts & stats · iChallenge network
Daily facts and stats about challenges, competitions and records, plus real challenges to put them to work.
In a single-elimination tournament with 16 players, how many matches are needed to crown a winner?
Every match eliminates one player, and 15 must be eliminated to leave one champion.

One ranked attempt per day. Practice as much as you like.
Join one, log your days or post your proof. Finishing earns XP and the Finisher badge.
Play one five-question round every day for a week. Check in after each round.
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Pick a safe skill like a puzzle time, juggling or typing speed, record your best and post it as a short write-up.
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Choose one tiny habit, like reading two pages, and do it every day for three weeks. Check in once a day.
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Live counts from ChallengePlatform.com. All arena stats →
Earned on any arena, shown on your profile everywhere.
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.
Fund a prize on ChallengePlatform.com and your brand sits on the challenge card, the leaderboard and every finisher's share. Prizes only appear once they're funded, so players can trust what they see.
Play today's quiz round, post your score, and start a streak.
XP, levels, streaks and badges. Save your progress with an email and it follows you to every arena on the iChallenge network.
Everyone on this arena gets the same five questions each day, from easy to hard. You get one ranked attempt; practice rounds are unlimited.
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.
Yes. Playing, streaks, badges and leaderboards are free. Some challenges carry a sponsor-funded prize; the challenge card shows it when one is funded.