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Ancient Brain
Code. Play. Teach. Learn. Research. Demo.

Our goal: To become one of the most fun places in the world to code.

26 countries    1,925 coders    7,553 worlds    411,576 runs    2.7 million lines of code    Update stats

Websocket buttons
179 runs ♦ 0 likes
By Starter user  
Created: 29 Feb 2020
Modified: 4 Jul 2021
Demo of Ancient Brain Websockets functionality. Run on multiple devices. Simple page uses button...
Websocket chat
756 runs ♦ 0 likes
By Starter user  
Created: 29 Feb 2020
Modified: 12 Jan 2023
Demo of Ancient Brain Websockets functionality. Run on multiple devices. Chat from one to the other.
Game of Crowns
2115 runs ♦ 2 likes
By Niamh Byrne  
Created: 16 Nov 2016
Modified: 10 Feb 2018
Rythm of the night
257 runs ♦ 0 likes
By Enhanced  
Created: 2 Aug 2018
Modified: 2 Aug 2018
A rythm game where you have to use the right inputs at the right time to progress from one level...
An online coding platform

Ancient Brain is an online coding and hosting platform for everyone.
See Intro and List of features.


Coders: Make 3D worlds and share them with friends. Clone and edit other people's worlds. Make touch mobile games. Embed your worlds on other sites.
Teachers: Run courses in coding and coding for kids and AI coding. Run programming practicals in 3D or 2D or text, with many features designed for teachers. Safely edit and run student code.
Learners: Do courses in coding and coding for kids and AI coding. Clone other people's worlds and change one or two lines. What's the worst that could happen?
Gamers: Play the endless game worlds the coders make. Come and browse an ever-growing archive of games.
Researchers: Upload problems, tender for solutions, test and rank them. Make hybrid AI systems from the code of multiple authors.
Enough talk. Show me a video!

OK, here is a high-level introduction.
This does not assume you have ever coded, or ever heard of JavaScript graphics (what is behind this site).

How to code
You can "run" any of the 7,553 programs or "Worlds" by clicking on them. But this is also a coding site, where you can code your own Worlds. You can use this site to learn to code. Or show off your creations if you are an experienced coder.
Click below to learn how to code on this site. Basically, there is a choice of "libraries" that you can use. Skip the intro, let us decide the library, and go straight to the starter tutorial (with videos):
Programming course

Ancient Brain has a course in how to program from scratch.
You will get to make "Worlds" like the following. Click on them to run them.

Tutorial 2.5
126 runs ♦ 1 like
By "Coding Train" p...  
Created: 4 Sep 2018
Modified: 4 Sep 2018
The random() Function
Tutorial 7.8 variant
334 runs ♦ 0 likes
By "Coding Train" p...  
Created: 6 Sep 2018
Modified: 11 Sep 2018
Tutorial 7.8 with music and other uploaded images, including from other users. Click on the images.
Tutorial 7.3
196 runs ♦ 0 likes
By "Coding Train" p...  
Created: 5 Sep 2018
Modified: 5 Sep 2018
Arrays of Objects
Tutorial 2.1
463 runs ♦ 1 like
By "Coding Train" p...  
Created: 4 Sep 2018
Modified: 4 Sep 2018
Variables in p5.js (mouseX, mouseY)
AI course

Ancient Brain has a set of AI programming exercises, with videos and notes. For use in any AI course.
You will get to modify "Worlds" like the following. Click on them to run them.

GA (Finnegans Wake)
803 runs ♦ 0 likes
By "Coding Train" p...  
Created: 2 May 2019
Modified: 15 Dec 2019
Genetic Algorithm to write the first line of Finnegans Wake.
Character recogn...
1531 runs ♦ 0 likes
By "Coding Train" p...  
Created: 5 Jul 2019
Modified: 2 Jul 2021
Neural network to do character recognition from image database and from handwriting in real-time.
Breadth-first se...
1798 runs ♦ 0 likes
By "Coding Train" p...  
Created: 30 Apr 2019
Modified: 15 Dec 2019
Breadth-first search with a Force-directed graph.
A star
2929 runs ♦ 1 like
By "Coding Train" p...  
Created: 1 May 2019
Modified: 21 Oct 2022
"A Star" algorithm to find shortest path through maze.
WebGL course

Ancient Brain has a short course in JavaScript 3D graphics ("WebGL") programming.
You will get to make "Worlds" like the following. Click on them to run them.

Tutorial 18.5
82 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 2 Jun 2019
Camera and Perspective
Tutorial 18.3
40 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 9 Sep 2018
Light and Material
Tutorial 18.7
369 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 11 Sep 2018
Tutorial 18.7 with full canvas, resized model, sound. Texture on box is image from another user.
Tutorial 18.8
62 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 9 Sep 2018
3D Custom Shapes
Starter Worlds for Three.js

These are the main "Starter Worlds" that use the Three.js library (which tends to give the most advanced graphics).

You can Clone and Edit all of these and change their code. Look for a section at the top called the "Tweaker's Box". This contains the easiest things to change.

One Cube World (...
1028 runs ♦ 2 likes
By Starter user  
Created: 11 Apr 2018
Modified: 21 Apr 2021
Simple starter World (Three.js version). Built-in camera control.
Websockets boxes
757 runs ♦ 0 likes
By Starter user  
Created: 29 Feb 2020
Modified: 14 Nov 2022
Demo of Websockets in 3D World. Click to change the boxes on the other user's machine, while the...
Touch World
418 runs ♦ 1 like
By Starter user  
Created: 6 Jan 2018
Modified: 18 Apr 2021
How to override default touch handling. Mobile: Touch drag moves agent, touch pinch zooms camera...
Castle World
729 runs ♦ 4 likes
By Starter user  
Created: 11 Nov 2016
Modified: 4 Jul 2021
Demo of how to insert 3d model into World. Mind-controlled agent, actively-pursuing enemy. Splas...
User-controlled ...
795 runs ♦ 2 likes
By Starter user  
Created: 12 Feb 2017
Modified: 18 Apr 2021
3d model World. User controlled on desktop. Keyboard arrows to move. Switch to "Move with" camer...
Model World
818 runs ♦ 2 likes
By Starter user  
Created: 8 Nov 2016
Modified: 18 Apr 2021
Demo of how to insert 3d models into World. Mind-controlled agent, actively-pursuing enemy. Skybox.
Password Websock...
53 runs ♦ 0 likes
By Starter user  
Created: 14 Nov 2022
Modified: 15 Nov 2022
Password version of "Websockets boxes"
Simple World
1507 runs ♦ 2 likes
By Starter user  
Created: 1 Oct 2016
Modified: 18 Apr 2021
Simple World with a Mind-controlled agent, randomly-moving enemy, paint blocks with texture.
MineCraft
989 runs ♦ 2 likes
By Starter user  
Created: 27 Nov 2016
Modified: 4 Jul 2021
Use keyboard to draw blocks like in MineCraft. Use arrow keys and PgUp, PgDn to draw. Can save w...
Zombie Death Baby
711 runs ♦ 1 like
By Starter user  
Created: 11 Jun 2018
Modified: 4 Jul 2021
How to make a fun touch game for mobile. Touch drag and tap objects. Mouse drag and click object...
Complex World
7345 runs ♦ 3 likes
By Starter user  
Created: 1 Oct 2016
Modified: 18 Apr 2021
World with a Mind-controlled agent, actively-pursuing enemy, random maze, skybox, music.
Blank Three.js World
1324 runs ♦ 2 likes
By Starter user  
Created: 20 Nov 2016
Modified: 18 Apr 2021
A simple starter World. An Array of spheres. Painted with textures. Random motion.
Random Worlds

Here are some random Worlds that have had more than 30 runs. Reload for more.

Character recogn...
269 runs ♦ 0 likes
By Tom McAllister  
Created: 9 Dec 2020
Modified: 13 Dec 2020
Clone of "Character recognition neural network" by "Coding Train" project
19214589-charact...
36 runs ♦ 0 likes
By barry  
Created: 22 Dec 2019
Modified: 22 Dec 2019
Clone of "Character recognition neural network" by "Coding Train" project
landscape
157 runs ♦ 0 likes
By Stratford College 2  
Created: 18 Nov 2019
Modified: 19 Nov 2019
its a landscape
Shooting Range (...
2323 runs ♦ 4 likes
By Adrian Rabbitte  
Created: 16 Nov 2016
Modified: 10 Feb 2018
Perceptron (clon...
42 runs ♦ 0 likes
By Nithish kumar  
Created: 27 Oct 2022
Modified: 27 Oct 2022
Clone of "Perceptron (clone by Sanchit Akhauri)" by Sanchit Akhauri
Perceptron v1
55 runs ♦ 0 likes
By Tony Forde  
Created: 10 Nov 2021
Modified: 11 Nov 2021
Clone of "Perceptron" by "Coding Train" project
Solar System Gen...
39 runs ♦ 0 likes
By Mathias Bazin  
Created: 7 Aug 2018
Modified: 7 Aug 2018
New World. Starting from scratch.
Binary tree (clo...
120 runs ♦ 0 likes
By Tony Forde  
Created: 7 Oct 2021
Modified: 9 Oct 2021
Clone of "Binary tree" by "Coding Train" project
Tom and Jerry C...
82 runs ♦ 0 likes
By Nihar Behera  
Created: 6 Nov 2019
Modified: 6 Nov 2019
Clone of "Complex World by Nihar Behera
New World
40 runs ♦ 0 likes
By Ger Gleeson  
Created: 8 Dec 2019
Modified: 8 Dec 2019


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Call for partners      Contact

Call for partners!
Ancient Brain is looking for partners. In particular, we seek a partner in writing a JavaScript coding book for schools, to be used worldwide. We will integrate your course into the Ancient Brain site. This is an opportunity for someone looking to develop a course and textbook to partner with a site to promote it. Read more.