About Graphium3D
Graphium3D turns the ideas behind software into 3D models you can play with. Most of these ideas aremoving things — pointers change, arrays get rearranged, packets travel through a network, a neural network adjusts its weights — yet books show them as still pictures. Here, every one of them moves, one step at a time.
Who is it for?
Anyone who wants to understand how things really work under the hood: beginners meeting their first data structure, people revising for exams or coding interviews, self-taught programmers, and teachers looking for something to show on the projector. Every topic starts from zero — a real-life analogy first, then the idea in 3D, and only then pseudocode, real code and complexity.
How each lesson works
- 3D model — the concept itself, live in your browser. Drag to rotate, scroll to zoom.
- Step-by-step player — every step is narrated in plain English and highlights the matching pseudocode line.
- Your own input — push your own values, sort your own numbers, choose your own graph.
- Share any moment — the share button links to the exact step you are looking at.
- Theory and code — clear explanations with Python and C++ examples.
- Quick quiz — check your understanding before moving on.
When you're ready to test yourself across many topics, the practice tests mix questions from every lesson, with a timed mock-test mode for exam preparation.
What's inside
96 interactive lessons across 8 subjects:
- Data Structures — 16 topics
- Design & Analysis of Algorithms — 22 topics
- AI & Machine Learning — 17 topics
- Operating Systems — 9 topics
- Database Management Systems — 8 topics
- Computer Networks — 10 topics
- Theory of Computation — 7 topics
- Computer Organization & Architecture — 7 topics
Runs on any device
The models work on laptops, tablets and phones in any modern browser, with nothing to install. On older or budget phones, switch onLite mode (the ⚡ button on every model) for a flat, fast 2D view — it also turns itself on automatically when a device struggles.
No sign-up, no paywall
There is no account to create and no "premium" version. The site is supported by a small number of advertisements, which we keep out of the way of the lessons.
Spotted a mistake?
Every lesson has a Report a mistake button at the end, and you can always reach us through thecontact page — whether it's a typo, a bug in a 3D model, or a topic you'd like to see next.