7-Day Idea Notebook Streak
Write down at least three new ideas each day, about anything at all. Check in once a day.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Challenge · Facts & stats · iChallenge network
Daily facts and stats about ideas, creativity and invention, plus real challenges to put them to work.
Leonardo da Vinci wrote much of his notebooks in which unusual way?
Leonardo, who was left-handed, wrote many notes in reversed script that reads normally in a mirror.

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.
Write down at least three new ideas each day, about anything at all. Check in once a day.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Make a mind map for a problem you want to solve and post a photo link or a short write-up of your best idea.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Pick a common household object and sketch or describe one way to make it better. Post a link or write-up.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Live counts from IdeasChallenge.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 IdeasChallenge.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.