⚡ Play Hero Brain — FREE →
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🧠 Free Games · No Sign-Up · Ages 5–15

SMART KIDS

The free brain games website made by a kid, for kids! Battle supervillains, solve puzzles, learn while playing — and become the smartest hero in the city! 🦸

⚡ PLAY HERO BRAIN — FREE!
163+
Questions
5
Heroes
6
Subjects
3
Levels
100%
Free
🕹️ Our Games

PICK YOUR GAME

All games are 100% free — no sign-up, no ads, just play!

✅ LIVE NOW — PLAY FREE!
⚡ HERO BRAIN
Battle 10 supervillains using only your brain! Answer questions on Maths, Science, Geography, Animals and Riddles. Pick your hero, choose your difficulty, earn streaks and save the city! 🦸
🔢 Maths🔬 Science🧩 Riddles 🌍 Geography🐾 Animals 163 QuestionsAges 5–153 Difficulties
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"Use your brain to defeat the villains!"
⚡ PLAY NOW — FREE!
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⏳ Coming Soon
MATHS BLAST
Race against the clock answering maths questions! Timed rounds, power-ups and villain chases!
⏱️ Timed🔢 MathsAges 6–14
⏳ In Development
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⏳ Coming Soon
WORLD QUEST
Travel the globe answering geography questions! Unlock countries, capitals and world wonders!
🗺️ Geography🏆 CollectiblesAges 8–15
⏳ In Development
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🔥 Next Up!
RIDDLE DUNGEON
Escape the dungeon by solving riddles and brain teasers! Each room has a new puzzle to crack!
🧩 Riddles🗝️ Escape StyleAges 7–15
⏳ In Development
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⏳ Coming Soon
SCIENCE LAB
Run experiments and answer science questions to stop the evil scientist from blowing up the lab!
🔬 Science🧪 ExperimentsAges 8–15
⏳ In Development
📚 What You'll Learn

6 FUN SUBJECTS

Every game teaches real school subjects — but makes them exciting!

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MATHS
66 questions
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SCIENCE
26 questions
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GEOGRAPHY
23 questions
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ANIMALS
24 questions
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RIDDLES
24 questions
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MIXED
All topics!
📖 How It Works

HOW TO PLAY

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PICK A GAME
Choose from our games library. Hero Brain is live now — more games coming soon!
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CHOOSE HERO
Pick from 5 superheroes — Electric, Fire, Ice, Wind or Ocean powers!
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SET DIFFICULTY
Easy (5–8), Medium (9–12), Hard (13–15). Pick your subject too!
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BATTLE VILLAINS
Answer 10 questions to defeat the villains. Use hints if you get stuck!
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WIN BADGES
Score points, build streaks and earn hero badges. Perfect score = GENIUS HERO!
👦 About Smart Kids

MADE BY A KID

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HI, I'M THE CREATOR!
I'm 11 years old and I built Smart Kids because I wanted brain games that are actually fun to play — not boring! Hero Brain has 163 questions across 6 subjects for kids aged 5 to 15. I'm learning to code and building new games every week. More games coming soon! 🚀
👦 Age 11 💻 Learning to Code 🎮 Game Builder 🚀 More Games Coming!