7-Day Streak Starter
Check in every day. Miss a day and the count starts over.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Challenge · Facts & stats · iChallenge network
The arena for campaign — pick a lane, prove it daily. Play today's round, build a streak, climb the leaderboard.
What is the hardest naturally occurring substance?
Diamond, made of tightly bonded carbon atoms, tops the Mohs hardness scale at 10.
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.
Check in every day. Miss a day and the count starts over.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Check in every day. Miss a day and the count starts over.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Do the work, then post a link or short note as proof. Approved entries finish the challenge.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
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 CampaignChallenge.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.