AQA Preliminary Code Study 2026
Interactive trace & visualisation tools

Choose Your Interactive

Select the level you're studying. Each tool lets you load, edit, and step through the AQA preliminary code with live visualisation and variable inspection.

A Level

Ants Simulation

Explore the object-oriented ants simulation. Step through execution with a live grid visualiser, UML class diagram, and variable inspector.

  • Live grid visualisation of ants, food & pheromones
  • Auto-generated UML class & composition diagram
  • Object attribute & locals inspector
Open A Level interactive
AS Level

Tile Game

Explore the procedural tile game. Step through execution with a live board visualiser, function hierarchy chart, and variable inspector.

  • Live game board showing tile state and player turn
  • Auto-generated function call hierarchy chart
  • Global variables & locals inspector
Open AS Level interactive

Requires a browser that supports SharedArrayBuffer and Cross-Origin Isolation. Run locally with npm start or use the hosted version on Cloudflare Pages.