Streak · 7 days+185 XP
7-Day Dry and Fresh Streak
Each day, wipe up one damp spot or air out a room to keep things dry. Check in once a day.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Be the first to join
Nature · Facts & stats · iChallenge network
The Mold Challenge
Daily facts and stats about molds, plus real challenges to put them to work.
Warm-up questionNot ranked · tap an answer
What is a large, tangled network of fungal threads called?
A mass of branching hyphae forms a mycelium, which spreads through the food source.
Level1Rookie
XPPlay a round to earn XP
Streak0days
LeagueBronzeweekly
Daily #8Resets 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.
Proof+250 XP
Bread Mold Observation
Seal a slice of bread in a clear bag, observe it for a week without opening it, then post a write-up and throw the bag away sealed.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Be the first to join
Streak · 10 days+200 XP
10-Day Fungi Fact Streak
Learn one fact about fungi each day and write it down in a notebook. Check in daily.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Be the first to join
Proof+250 XP
Draw a Mold Up Close
Find a microscope image of mold hyphae and spores, draw and label it, and post a link or short write-up.
SponsorseCorp.comSavingTheWorld.orgVentureOS.com
Be the first to join
By the numbers
Live counts from MoldChallenge.com. All arena stats →
Facts in the pack12
Visitors, 30 days10
Leaderboard
- Loading…
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.
Put a prize on a challenge
Fund a prize on MoldChallenge.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.
- Pick the challenge and the prize
- We review entries before a funded prize is awarded
- You get finisher and engagement numbers after it closes
Current sponsors
Questions
Do pros compete too?
Yes — pros and homeowners rank on separate boards when flagged.
Can I get matched to a pro?
Home-trade challenges link into the network's verified pro directory.
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.
