Dev rebuilds Modern Warfare 2 source code using Claude and Codex agents

Developer Maurice Heumann used Claude and Codex agents and more than 500 billion tokens to reconstruct Call of Duty: Modern Warfare 2's source code. About 83% of functions match the original byte for byte.

Why it matters: It is a concrete, large-scale example of agents doing decompilation and reverse engineering, a task with a verifiable success metric. It shows both the capability and the token cost of long-horizon agentic work, and raises IP questions for legacy software.