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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.

34 countries    2,147 coders    9,306 worlds    504,731 runs    3.2 million lines of code    Update stats

Infinite story book
394 runs ♦ 0 likes
By Darragh McG  
Created: 29 Nov 2023
Modified: 16 Feb 2024
Indefinite story book generation. Allows the user to automatically generate an illustrated short...
Shooting Range (...
2333 runs ♦ 4 likes
By Adrian Rabbitte  
Created: 16 Nov 2016
Modified: 17 Sep 2023
Language Transla...
89 runs ♦ 0 likes
By Darius Beril  
Created: 7 Dec 2023
Modified: 8 Feb 2024
AI Language Translator And Reader. (1) Uses OpenAI GPT API for translation. Need to enter your o...
2D sprite animation
158 runs ♦ 0 likes
By Mark Humphrys  
Created: 11 Nov 2018
Modified: 17 Sep 2023
2D sprite animation on a surface. Change show3d to true to see it on 3d box faces.
An online coding platform

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


Coders: Make 3D worlds and share them with friends. Clone and edit other people's worlds. Make multi-user games and environments. Make touch mobile games. Upload your own images, music and 3D models. Embed your worlds on other sites.
Teachers: Run courses in coding and coding for kids and AI coding. Run programming practicals in 3D graphics or 2D graphics 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.
Getting started
You can "run" any of the 9,306 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.
Basically you can read more about how to get started running Worlds and coding: Or you can leap straight into coding with our starter tutorial:
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 7.8 variant
369 runs ♦ 0 likes
By "Coding Train" p...  
Created: 6 Sep 2018
Modified: 17 Sep 2023
Tutorial 7.8 with music and other uploaded images, including from other users. Click on the images.
Tutorial 2.1
545 runs ♦ 1 like
By "Coding Train" p...  
Created: 4 Sep 2018
Modified: 17 Sep 2023
Variables in p5.js (mouseX, mouseY)
Tutorial 7.3
224 runs ♦ 0 likes
By "Coding Train" p...  
Created: 5 Sep 2018
Modified: 17 Sep 2023
Arrays of Objects
Tutorial 2.5
160 runs ♦ 1 like
By "Coding Train" p...  
Created: 4 Sep 2018
Modified: 17 Sep 2023
The random() Function
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)
991 runs ♦ 0 likes
By "Coding Train" p...  
Created: 2 May 2019
Modified: 17 Sep 2023
Genetic Algorithm to write the first line of Finnegans Wake.
A star
3913 runs ♦ 1 like
By "Coding Train" p...  
Created: 1 May 2019
Modified: 17 Sep 2023
"A Star" algorithm to find shortest path through maze.
Breadth-first se...
2760 runs ♦ 0 likes
By "Coding Train" p...  
Created: 30 Apr 2019
Modified: 17 Sep 2023
Breadth-first search with a Force-directed graph.
Character recogn...
1790 runs ♦ 0 likes
By "Coding Train" p...  
Created: 5 Jul 2019
Modified: 17 Sep 2023
Neural network to do character recognition from image database and from handwriting in real-time.
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 18.8
86 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 17 Sep 2023
3D Custom Shapes
Tutorial 18.3
59 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 17 Sep 2023
Light and Material
Tutorial 18.5
86 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 17 Sep 2023
Camera and Perspective
Tutorial 18.7
401 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 17 Sep 2023
Tutorial 18.7 with full canvas, resized model, sound. Texture on box is image from another user.
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 (...
1112 runs ♦ 2 likes
By Starter user  
Created: 11 Apr 2018
Modified: 17 Sep 2023
Simple starter World (Three.js version). Built-in camera control.
MineCraft
1114 runs ♦ 2 likes
By Starter user  
Created: 27 Nov 2016
Modified: 17 Sep 2023
Use keyboard to draw blocks like in MineCraft. Use arrow keys and PgUp, PgDn to draw. Can save w...
Castle World
785 runs ♦ 4 likes
By Starter user  
Created: 11 Nov 2016
Modified: 17 Sep 2023
Demo of how to insert 3d model into World. Mind-controlled agent, actively-pursuing enemy. Splas...
Password Websock...
65 runs ♦ 0 likes
By Starter user  
Created: 14 Nov 2022
Modified: 17 Sep 2023
Password version of "Websockets boxes"
Blank Three.js World
1492 runs ♦ 2 likes
By Starter user  
Created: 20 Nov 2016
Modified: 17 Sep 2023
A simple starter World. An Array of spheres. Painted with textures. Random motion.
Websockets boxes
799 runs ♦ 0 likes
By Starter user  
Created: 29 Feb 2020
Modified: 17 Sep 2023
Demo of Websockets in 3D World. Click to change the boxes on the other user's machine, while the...
Zombie Death Baby
760 runs ♦ 1 like
By Starter user  
Created: 11 Jun 2018
Modified: 17 Sep 2023
How to make a fun touch game for mobile. Touch drag and tap objects. Mouse drag and click object...
Complex World
8189 runs ♦ 5 likes
By Starter user  
Created: 1 Oct 2016
Modified: 17 Sep 2023
World with a Mind-controlled agent, actively-pursuing enemy, random maze, skybox, music.
Simple World
1642 runs ♦ 2 likes
By Starter user  
Created: 1 Oct 2016
Modified: 17 Sep 2023
Simple World with a Mind-controlled agent, randomly-moving enemy, paint blocks with texture.
Touch World
457 runs ♦ 1 like
By Starter user  
Created: 6 Jan 2018
Modified: 17 Sep 2023
How to override default touch handling. Mobile: Touch drag moves agent, touch pinch zooms camera...
Model World
855 runs ♦ 2 likes
By Starter user  
Created: 8 Nov 2016
Modified: 17 Sep 2023
Demo of how to insert 3d models into World. Mind-controlled agent, actively-pursuing enemy. Skybox.
User-controlled ...
902 runs ♦ 2 likes
By Starter user  
Created: 12 Feb 2017
Modified: 17 Sep 2023
3d model World. User controlled on desktop. Keyboard arrows to move. Switch to "Move with" camer...
Random Worlds

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

8. Functions
222 runs ♦ 0 likes
By Alex Murphy  
Created: 2 May 2019
Modified: 17 Sep 2023
JavaScript Functions
P5 test
32 runs ♦ 0 likes
By Mathias Bazin  
Created: 27 Jun 2018
Modified: 17 Sep 2023
P5 can be used to draw in this world. I couldn't get the screenshot to work.
A* Chase Mind
236 runs ♦ 0 likes
By Chen Zhenshuo  
Created: 23 Oct 2020
Modified: 17 Sep 2023
Further Version: https://github.com/czs108/Chase-AI
Space Hero
119 runs ♦ 0 likes
By Enhanced  
Created: 13 Jun 2018
Modified: 17 Sep 2023
Drag the Earth the collect the suns. Don't get hit by the asteriods ! Enhanced version of "Space...
21st sep lab 1
49 runs ♦ 0 likes
By Kaushal Mishra  
Created: 21 Sep 2023
Modified: 21 Sep 2023
Clone of "One Cube World (P5)" by Starter user
Battleship (clon...
1014 runs ♦ 0 likes
By Thomas Hazekamp  
Created: 13 Nov 2022
Modified: 17 Sep 2023
2 player battleship with sound effects & sea shanty songs
Sumbission Pract...
151 runs ♦ 0 likes
By Deborah Djon  
Created: 3 Dec 2022
Modified: 17 Sep 2023
Clone of "Sumbission Practical 2" by Deborah Djon
Yet Another Sphe...
114 runs ♦ 0 likes
By Michael Walsh  
Created: 20 Sep 2022
Modified: 17 Sep 2023
Clone of "One Cube World (Three.js)" by Starter user


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Call for partners!
Ancient Brain is looking for a partner to co-write a JavaScript coding book for schools, to be used worldwide. This would be a course for students in learning to code from scratch. The book and course will be integrated 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.