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Online chess
Lichess
Lichess, the free, ad-free chess server. Every line of code is public.
Free chess for everyone, with no ads and open code. Great for learning strategy.
★ 19kScalaActive
Games with meaning
Play something that stays with you. Games that teach, move you or change how you see the world.
All games with meaning
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Learn to code
CodeCombat
Learn real Python and JavaScript by writing code that controls your hero through dungeon levels.
Turns programming into a quest. You type real code and see it act instantly.
★ 8.6kJavaScriptActive
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Transport tycoon
OpenTTD
Build rail, road, sea and air networks in this open take on Transport Tycoon Deluxe. Multiplayer included.
A playful lesson in logistics, supply chains and long-term planning.
★ 8.5kC++Active
Tower defense, learning
Server Survival
Build infrastructure, survive the traffic and learn cloud architecture by playing.
Teaches how real cloud systems cope with traffic by making you build one.
★ 6.5kJavaScriptActive
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Physics sandbox
The Powder Toy
A falling-sand physics sandbox with hundreds of elements. Burn, freeze, explode and invent.
Makes heat, pressure and chemistry something you can play with.
★ 5.4kC++Active
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Creative coding
Scratch
Create your own games, stories and animations by snapping code blocks together. The editor behind Scratch 3.0.
Teaches kids to create, not just consume. Millions of projects are shared and remixed.
★ 4.8kJavaScriptSlowing
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Programming idle game
Bitburner
A cyberpunk hacking incremental game you play by writing real JavaScript scripts.
Teaches scripting by making automation the whole point of the game.
★ 1.6kTypeScriptActive
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Learn to code
Blockly Games
A free set of educational games that teach programming with visual blocks. No typing and no account required.
Builds computational thinking step by step, from simple puzzles to real JavaScript.
★ 1.4kJavaScriptQuiet
Visual novel, learning
Learn to Code RPG
A visual novel where you learn to code and land a developer job, one story beat at a time.
Makes the path into tech feel like a story rather than a syllabus.
★ 1.1kRen'PyQuiet
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City builder
MicropolisJS
A browser port of Micropolis, the open-sourced SimCity classic. Zone, build and manage your own city.
A hands-on lesson in urban planning, budgets and trade-offs.
★ 736JavaScriptQuiet
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Coding for little kids
ScratchJr
Young children program their own interactive stories and games with picture blocks. For ages 5 to 7.
A gentle first step into coding that builds sequencing and storytelling.
★ 707JavaScriptQuiet
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Geography
WorldGuessr
A free, open-source geography guessing game: see a street-level view and pin where in the world you are.
Teaches how the world looks, from road signs to landscapes.
★ 565JavaScriptActive
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Educational suite
GCompris
Over 100 activities for young children covering letters, numbers, music, science and more. Mirror of the KDE project.
A free, ad-free learning toolbox that works offline for schools and homes.
★ 266QMLActive
Browser
Cartoon strategy, learning
Series of Tubes
A free cartoon browser game about how the internet really works.
Explains the physical internet in a way you remember.
★ 201JavaScriptActive
Mobile
Drawing for kids
Tux Paint
A free drawing program for children with stamps, magic effects and friendly sounds. The GitHub project is the Android port; the main program lives at tuxpaint.org.
Creativity first: no scores, no timers, just a blank page.
★ 81CSlowing
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Life simulation
1 in 8 Billion
A free browser life simulation. You are born at random into one of 172 countries and live one life shaped by real public statistics.
Walk through a life you did not choose. A quiet exercise in empathy built on real data.
Web game