Ancient Brain

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

An online coding and hosting platform for everyone.

39 countries 2,457 coders 11,707 worlds 604,449 runs 3.8 million lines of code Update stats

See our ICDTE 2024 paper

and our IJIET 2025 paper.

Ammo physics mod...
111 runs ♦ 0 likes
By Starter user Ireland

Created: 19 Apr 2021
Modified: 17 Sep 2023
Highly modified version of "ammo / instancing" from Three.js examples

Game of Crowns
2368 runs ♦ 2 likes
By Niamh Byrne
Created: 16 Nov 2016
Modified: 17 Sep 2023

Lego
540 runs ♦ 0 likes
By Michael Walsh
Created: 14 Nov 2022
Modified: 1 Oct 2023
Clone of "webgl_interactive_voxelpainter" by threejs.org porting project

Looney Tunes Cha...
1449 runs ♦ 2 likes
By Sean Sinnott
Created: 16 Nov 2016
Modified: 17 Sep 2023

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 11,707 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.

Read more about how to get started running Worlds and coding:

Getting started

Or jump straight into coding with the starter tutorial:

P5 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
383 runs ♦ 0 likes
By "Coding Train" p... United States

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
567 runs ♦ 1 like
By "Coding Train" p... United States

Created: 4 Sep 2018
Modified: 17 Sep 2023
Variables in p5.js (mouseX, mouseY)

Tutorial 2.5
174 runs ♦ 1 like
By "Coding Train" p... United States

Created: 4 Sep 2018
Modified: 17 Sep 2023
The random() Function

Tutorial 7.3
232 runs ♦ 0 likes
By "Coding Train" p... United States

Created: 5 Sep 2018
Modified: 17 Sep 2023
Arrays of Objects

Introduction to Programming

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.

A star
5001 runs ♦ 2 likes
By "Coding Train" p... United States

Created: 1 May 2019
Modified: 17 Sep 2023
"A Star" algorithm to find shortest path through maze.

Character recogn...
2071 runs ♦ 0 likes
By "Coding Train" p... United States

Created: 5 Jul 2019
Modified: 17 Sep 2023
Neural network to do character recognition from image database and from handwriting in real-time.

Breadth-first se...
3420 runs ♦ 0 likes
By "Coding Train" p... United States

Created: 30 Apr 2019
Modified: 17 Sep 2023
Breadth-first search with a Force-directed graph.

GA (Finnegans Wake)
1132 runs ♦ 0 likes
By "Coding Train" p... United States

Created: 2 May 2019
Modified: 17 Sep 2023
Genetic Algorithm to write the first line of Finnegans Wake.

AI exercises

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
94 runs ♦ 0 likes
By "Coding Train" p... United States

Created: 9 Sep 2018
Modified: 17 Sep 2023
3D Custom Shapes

Tutorial 18.3
67 runs ♦ 0 likes
By "Coding Train" p... United States

Created: 9 Sep 2018
Modified: 17 Sep 2023
Light and Material

Tutorial 18.5
96 runs ♦ 0 likes
By "Coding Train" p... United States

Created: 9 Sep 2018
Modified: 17 Sep 2023
Camera and Perspective

Tutorial 18.7
426 runs ♦ 0 likes
By "Coding Train" p... United States

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.

WebGL course

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.

Castle World
809 runs ♦ 4 likes
By Starter user Ireland

Created: 11 Nov 2016
Modified: 17 Sep 2023
Demo of how to insert 3d model into World. Mind-controlled agent, actively-pursuing enemy. Splas...

One Cube World (...
1222 runs ♦ 2 likes
By Starter user Ireland

Created: 11 Apr 2018
Modified: 17 Sep 2023
Simple starter World (Three.js version). Built-in camera control.

Websockets boxes
820 runs ♦ 0 likes
By Starter user Ireland

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...

Complex World
8373 runs ♦ 5 likes
By Starter user Ireland

Created: 1 Oct 2016
Modified: 17 Sep 2023
World with a Mind-controlled agent, actively-pursuing enemy, random maze, skybox, music.

Simple World
1734 runs ♦ 2 likes
By Starter user Ireland

Created: 1 Oct 2016
Modified: 17 Sep 2023
Simple World with a Mind-controlled agent, randomly-moving enemy, paint blocks with texture.

Blank Three.js World
1773 runs ♦ 2 likes
By Starter user Ireland

Created: 20 Nov 2016
Modified: 17 Sep 2023
A simple starter World. An Array of spheres. Painted with textures. Random motion.

MineCraft
1158 runs ♦ 2 likes
By Starter user Ireland

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...

Zombie Death Baby
820 runs ♦ 1 like
By Starter user Ireland

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...

User-controlled ...
971 runs ♦ 2 likes
By Starter user Ireland

Created: 12 Feb 2017
Modified: 17 Sep 2023
3d model World. User controlled on desktop. Keyboard arrows to move. Switch to "Move with" camer...

Touch World
474 runs ♦ 1 like
By Starter user Ireland

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
872 runs ♦ 2 likes
By Starter user Ireland

Created: 8 Nov 2016
Modified: 17 Sep 2023
Demo of how to insert 3d models into World. Mind-controlled agent, actively-pursuing enemy. Skybox.

Password Websock...
73 runs ♦ 0 likes
By Starter user Ireland

Created: 14 Nov 2022
Modified: 17 Sep 2023
Password version of "Websockets boxes"

Random Worlds

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

Complex World (c...
121 runs ♦ 0 likes
By Sophie Renshaw
Created: 6 Nov 2021
Modified: 17 Sep 2023
Clone of "Complex World (clone by Sophie Renshaw) - V2" by Sophie Renshaw

Pranshu Mangal A...
82 runs ♦ 0 likes
By Pranshu Mangal
Created: 2 Dec 2023
Modified: 4 Dec 2023
Pranshu Mangal AI practical 2

Chat with GPT mo...
84 runs ♦ 0 likes
By Sruthi
Created: 2 Dec 2023
Modified: 11 Sep 2024
Clone of "Chat with GPT model" by Starter user

gentle_intro
41 runs ♦ 0 likes
By Chinmay
Created: 30 Sep 2021
Modified: 17 Sep 2023
\this is the first time \i am using p5

Binary tree (clo...
52 runs ♦ 0 likes
By Josh Casey
Created: 3 Oct 2023
Modified: 11 Sep 2024
Clone of "Binary tree" by "Coding Train" project

New World
100 runs ♦ 0 likes
By Patricija Shalka... Ireland

Created: 30 Nov 2022
Modified: 17 Sep 2023

A star (Heuristi...
59 runs ♦ 0 likes
By anish kumar
Created: 8 Nov 2020
Modified: 17 Sep 2023
No Diagonal no walls using Heuristic #2

2.85 AI And UI c...
79 runs ♦ 0 likes
By Mikey Dowling
Created: 7 Mar 2019
Modified: 17 Sep 2023
Clone of "2.6 " by tuitef2

Blockchain Demo
89 runs ♦ 0 likes
By Stefano Marzo Italy (Italia)

Created: 1 Oct 2021
Modified: 17 Sep 2023

New World
96 runs ♦ 0 likes
By Nithin Sai K J India (भारत)

Created: 8 Nov 2023
Modified: 11 Sep 2024

The background is a program, showing the JavaScript graphics used on this site.
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Users retain ownership of user content.

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Call for partners Contact

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.