Master History, Science, Geography, Languages, Cultures, Technology, and General Knowledge through interactive quizzes and challenges.
New badge
Perfect Score
Streak
12 days in a row
Rank
Scholar
Six powerful systems designed to keep you curious, motivated and improving every single day.
Learn through levels, rewards, and achievements.
Compete with learners worldwide.
Complete missions and earn rewards.
Unlock badges and milestones.
Track strengths and weaknesses.
Travel across the world and unlock new challenges.
Eight worlds, hundreds of levels, infinite curiosity. Each world has Easy, Medium and Hard tiers with XP rewards and progress tracking.
Five destinations, five different challenges. Complete them all to earn XP, coins, badges — and unlock new worlds.
History Challenges
+250 XP
Language Challenges
+220 XP
Culture Challenges
+210 XP
Technology Challenges
+280 XP
Science Challenges
+350 XP
Nine iconic badges mark the milestones of your learning journey.
Complete your first quiz
Score 100% on any quiz
Ace 50 history challenges
Conquer 50 science levels
Map all 7 continents
Master 5 languages
Visit 20 cultural hubs
Crack 50 tech puzzles
Reach the top 1% globally
Six ranks. One journey. Climb the ladder by earning XP.
0 – 500 XP
500 – 2,000 XP
2,000 – 5,000 XP
5,000 – 10,000 XP
10,000 – 25,000 XP
25,000+ XP
Four hand-picked challenges refresh at midnight. Complete them all to keep your streak alive.
+50 XP
+100 XP
+25 Coins
+75 XP
Compete across global, weekly, monthly and country rankings.
Aiko Tanaka
🇯🇵 Top 1 globally
48,920
XP earned
Lucas Bernard
🇫🇷 Top 2 globally
46,310
XP earned
Priya Sharma
🇮🇳 Top 3 globally
45,108
XP earned
Marco Rossi
🇮🇹 Top 4 globally
42,755
XP earned
Sofia García
🇪🇸 Top 5 globally
40,920
XP earned
"World Knowledge Quiz turned my daily commute into a learning ritual. I've climbed 4 ranks in 3 months."
Sarah Chen
Medical Student
"The daily challenges and leaderboards kept me consistent. Scored top 1% on my exam prep."
Daniel Okafor
Competitive Exam Candidate
"Finally, a quiz app that feels like an adventure. The world map makes me want to learn something new every day."
Emma Larsson
Lifelong Learner
Yes. You can join, play and progress through every world for free. Optional premium plans unlock extra daily challenges and cosmetic badges.
You earn XP for every quiz you complete, bonus XP for streaks and perfect scores. XP determines your rank — climb from Beginner all the way to Legend.
Absolutely. The Global, Weekly, Monthly and Country leaderboards let you track where you stand. You can also create private leaderboards with your friends.
Yes. When you complete a Knowledge World you unlock a shareable certificate — perfect for your LinkedIn, school applications or portfolio.
Our system picks challenges based on your weakest areas, your recent activity and your current rank — so every day is the right level of stretch.
Yes. Sign in once and your XP, badges, ranks and progress sync across phone, tablet and web automatically.
Send us a message — our team replies within 24 hours.
Join 2.4 million learners. Free forever. No credit card required.