Open-source mini-games that teach kids the skill AI can't replace: problem solving.
🎮 Play now -- works on any device, no install needed.
AI can write essays, generate code, and pass exams. But it can't think through a problem it's never seen before.
In a world where AI handles the routine, the kids who thrive will be the ones who can break down problems, think fast, and find patterns. That's not memorization. That's problem solving under pressure.
BrainSpark is a growing collection of mini-games that train exactly that. Each game targets a different aspect of problem solving. They feel like games, not homework. And they build the kind of thinking that no AI can do for you.
This is the most valuable skill your kid can practice in the age of AI.
Equations fall from the sky. Solve them before they hit the ground. Covers Pre-K through 5th grade with 10 levels per grade. Starts with 1 + 2, ends with 144 ÷ 12.
| Grade | Ages | What They Learn |
|---|---|---|
| 🌱 Pre-K | 3-5 | Counting, simple addition |
| 🌿 Kindergarten | 5-6 | Addition & subtraction to 10 |
| 🌳 1st Grade | 6-7 | Addition & subtraction to 20 |
| 🪴 2nd Grade | 7-8 | Two-digit problems, intro to multiplication |
| 🌲 3rd Grade | 8-9 | Multiplication & division |
| 🏔️ 4th Grade | 9-10 | Multi-digit operations, larger numbers |
| 🚀 5th Grade | 10-11 | All operations, speed and complexity |
Math Drop is just the first game. BrainSpark is meant to grow into a full collection of mini-games, and the possibilities are wide open. Here are some ideas to get you thinking:
New game ideas:
- 🧩 Pattern games that train pattern recognition and sequence completion
- 🔤 Word games that build vocabulary and mental flexibility under time pressure
- 🧠 Memory games that stretch working memory with progressively harder sequences
- 🔀 Logic puzzles with rule-based challenges that train conditional thinking
- 📐 Estimation games that build number sense and spatial reasoning
- 🧱 Visual programming puzzles where kids drag and drop logic blocks to solve challenges
Games don't have to be "falling" mechanics. Any format works: matching, sorting, building, racing, drawing. The only requirement is that it makes kids think harder and have fun doing it.
Other ways to contribute:
- 🎨 Design -- animations, themes, accessibility, sound effects
- 🧮 Content -- new grade levels (6th+), word problems, fractions, decimals
- 🌍 Localization -- translate to other languages so more kids can play
- 🐛 Bug fixes -- find something broken? PRs welcome
- 💡 Ideas -- open an issue with your feature suggestion
The goal is simple: every kid on earth should have access to free, high-quality tools that make them better thinkers. No paywalls, no subscriptions, no premium tiers.
- Multi-user profiles -- siblings each get their own avatar, grade level, and progress
- Works everywhere -- phone, tablet, laptop, Chromebook
- Install as PWA -- offline play, feels like a native app
- Zero ads, zero tracking -- no data collection, ever
- No accounts needed -- everything stays on device
Pure vanilla JS, HTML, CSS. No frameworks, no build step, no dependencies. Open index.html and play.
- PWA -- installable, works offline
- LocalStorage -- all progress stays on device
- Responsive -- adapts to any screen size
- Touch + Keyboard -- works on both
git clone https://github.com/Kentro-io/brainspark.git
cd brainspark
open index.htmlNo npm install. No build. No environment variables. Just HTML.
MIT -- use it, fork it, put it in your school, teach your kids, teach other people's kids.
Built with ❤️ by Kentro
We build operations software for e-commerce. BrainSpark is our way of giving back.