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

An online coding and hosting platform for everyone.

34 countries    2,152 coders    9,329 worlds    506,208 runs    3.2 million lines of code    Update stats

GPT Explorer
156 runs ♦ 0 likes
By Hardik Mangla  
Created: 22 Nov 2023
Modified: 11 Feb 2024
Dropdown menu to guide you through things you can get OpenAI's GPT to do. Code simply adds more ...
P5 Particle System
200 runs ♦ 0 likes
By Starter user  
Created: 4 Aug 2018
Modified: 17 Sep 2023
Port of P5 site's "Particle System" example with almost no change. P5 plain API. No AB framework...
CELLS WITH MIND ...
141 runs ♦ 1 like
By Enhanced  
Created: 10 Jul 2018
Modified: 17 Sep 2023
Cells is a game about cells trying to infect each other. It offers a playground for minds to com...
VerseCraft
407 runs ♦ 1 like
By Leonard Alphonso  
Created: 29 Nov 2023
Modified: 11 Feb 2024
Calls GPT and DALL-E (text to image) and Whisper (text to speech) APIs (all at OpenAI). User ent...
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 9,329 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 2.1
546 runs ♦ 1 like
By "Coding Train" p...  
Created: 4 Sep 2018
Modified: 17 Sep 2023
Variables in p5.js (mouseX, mouseY)
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 7.3
225 runs ♦ 0 likes
By "Coding Train" p...  
Created: 5 Sep 2018
Modified: 17 Sep 2023
Arrays of Objects
Tutorial 2.5
163 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.

Breadth-first se...
2778 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...
1801 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.
A star
3958 runs ♦ 1 like
By "Coding Train" p...  
Created: 1 May 2019
Modified: 17 Sep 2023
"A Star" algorithm to find shortest path through maze.
GA (Finnegans Wake)
997 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.
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 18.3
63 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 17 Sep 2023
Light and Material
Tutorial 18.8
90 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 17 Sep 2023
3D Custom Shapes
Tutorial 18.5
91 runs ♦ 0 likes
By "Coding Train" p...  
Created: 9 Sep 2018
Modified: 17 Sep 2023
Camera and Perspective
Tutorial 18.7
410 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.

Model World
856 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.
Zombie Death Baby
771 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...
Simple World
1646 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.
Blank Three.js World
1504 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.
Complex World
8199 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.
User-controlled ...
915 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...
One Cube World (...
1113 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
1116 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...
Password Websock...
66 runs ♦ 0 likes
By Starter user  
Created: 14 Nov 2022
Modified: 17 Sep 2023
Password version of "Websockets boxes"
Websockets boxes
803 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...
Castle World
786 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...
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...
Random Worlds

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

My scary dip in ...
86 runs ♦ 0 likes
By Akin Wilson  
Created: 1 Oct 2022
Modified: 17 Sep 2023
Throwing Javascript all over the place
Binary tree Ex_1...
68 runs ♦ 0 likes
By Lu19  
Created: 9 Oct 2019
Modified: 17 Sep 2023
Clone of "Binary tree" by "Coding Train" project
My AI world
236 runs ♦ 0 likes
By Rakesh Reddy Soma  
Created: 26 Nov 2020
Modified: 17 Sep 2023
Clone of "Complex World" by Starter user
Complex World 1 ...
180 runs ♦ 0 likes
By Ishrat Syed  
Created: 11 Nov 2022
Modified: 17 Sep 2023
Clone of "Complex World" by Starter user
XOR multi-layer ...
53 runs ♦ 0 likes
By Ho Yan Woo  
Created: 13 Nov 2023
Modified: 14 Nov 2023
Clone of "XOR multi-layer network" by "Coding Train" project
Binary tree (clo...
42 runs ♦ 0 likes
By Harshita Tyagi  
Created: 6 Oct 2022
Modified: 17 Sep 2023
Clone of "Binary tree" by "Coding Train" project
The Game of Life
747 runs ♦ 0 likes
By Enhanced  
Created: 9 Jul 2018
Modified: 17 Sep 2023
The famous Game of Life. Click on the screen to place the initial cells and then click start ! ...
A star 17 Oct
86 runs ♦ 0 likes
By Extra test  
Created: 17 Oct 2023
Modified: 17 Oct 2023
Clone of "A star" by "Coding Train" project
One Cube World (...
34 runs ♦ 0 likes
By Rebecca  
Created: 13 May 2019
Modified: 17 Sep 2023
Clone of "One Cube World (P5) (clone by Rebecca) (clone by Rebecca)" by Rebecca
A star (clone by...
54 runs ♦ 0 likes
By Jai Warde  
Created: 25 Nov 2020
Modified: 17 Sep 2023
Clone of "A star" by "Coding Train" project


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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.