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Developer uses AI agents to decompile an FPS game: 500B tokens, 99% of functions restored, 83% byte-matching (community report)
What happened
A developer's account was shared on GeekNews. Over about three months, they had AI agents decompile a first-person shooter back into C++ code, using about 500 billion tokens. As a result, 99% of all functions were restored, and 83% matched the original byte for byte, according to the account. The game was already running and loading maps in the first month. However, the developer said code that looked readable often hid incorrect function signatures, types, and struct layouts. Around the same time, other cases also drew attention on Reddit, including people using AI reverse engineering to port games to the browser or reimplement commercial software.
Provider claims
The author claimed that 99% of functions were restored and 83% matched byte for byte. These results have not been independently verified.
Why it matters
This gives concrete numbers suggesting AI agents can actually carry out long, large-scale reverse engineering. It also leaves open the problem of verifying code that looks plausible but is wrong. The impact on commercial software cloning, copyright, and security analysis could also grow.
Confidence low · official source pending