⚡ 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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✅ LIVE NOW — PLAY FREE!
MOTION LAB
Watch math and science happen! Set the numbers, predict the answer, then run the animation to see if you're right. Cars crossing, racing buckets, staggered trains and more!
🔢 Maths🔬 Physics🎬 AnimatedAges 6–15
▶ Play Motion Lab
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✅ LIVE NOW — PLAY FREE!
MATHS BLAST
Race against the clock answering maths questions! Timed rounds, power-ups and a villain chase — keep your streak alive to push it back!
⏱️ Timed🔢 MathsAges 6–14
▶ Play Maths Blast
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✅ LIVE NOW — PLAY FREE!
WORLD QUEST
Travel the globe answering geography questions! Unlock countries, capitals and world wonders as you explore by age group!
🗺️ Geography🏆 CollectiblesAges 6–15
▶ Play World Quest
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✅ LIVE NOW — PLAY FREE!
RIDDLE DUNGEON
Escape the dungeon by solving riddles and brain teasers! Each room hides a new puzzle behind a locked door!
🧩 Riddles🗝️ Escape StyleAges 6–15
▶ Play Riddle Dungeon
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✅ LIVE NOW — PLAY FREE!
SCIENCE LAB
Run experiments and answer science questions to stop the evil scientist from blowing up the lab!
🔬 Science🧪 ExperimentsAges 6–15
▶ Play Science Lab
📚 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!