A comprehensive reverse engineering project has fully documented the source code for Atari's 1982 classic Raiders of the Lost Ark for the Atari 2600. The repository contains commented assembly code, build tools, and technical documentation that reveals how this complex adventure game operated within the 1970s-era console's severe hardware limitations. The project was led by Dennis Debro and Halkun, who disassembled and analyzed the original game code.

The reverse-engineered source demonstrates sophisticated programming techniques including a 2-bank ROM architecture that switches between game logic and display kernels every frame. The game uses self-modifying code and bank-switching via strobes at specific memory addresses to manage its 8KB of total ROM. The project includes Windows batch scripts for building and running the compiled ROM using DASM and Stella emulator.

Technical documentation reveals the game's intricate frame-by-frame architecture, with logic divided across VBLANK and Overscan phases to stay within CPU time budgets. The source shows how the game handles complex features like Indiana Jones's inventory system, room transitions, enemy AI including snake behavior, and the famous Ark Room sequence. The codebase is organized with clear separation between game logic in Bank 0 and display kernels in Bank 1, making it accessible for study and modification by retro computing enthusiasts.