The internet's oldest benchmark just got a new twist. According to Tom's Hardware, an AI computing enthusiast has demonstrated the classic shooter Doom running on a custom CPU that was designed by GPT-5.6 Sol.
The demonstration took place inside Turing Complete, a sandbox game in which players build working computers from logic gates upward — wiring together components until they have something that can actually execute instructions. In this case, the processor design came from the AI model rather than a human engineer, and an AI coder handled getting the game running on it.
The visual result is the part that has drawn attention. Tom's Hardware describes the game viewport as overlaid on a pulsing schematic of the CPU itself, so viewers can watch the processor's circuitry light up in time with the gameplay. It is a rare case of seeing the machinery and the software it produces in the same frame.
A few things are worth keeping in perspective. This is a simulated CPU inside a game environment, not silicon fabricated in a foundry. Turing Complete is a puzzle sandbox, and the achievement lives there.
Still, "can it run Doom?" has been the informal proof-of-life test for custom hardware for decades, precisely because the game demands a genuinely functional processor, memory handling, and display pipeline working in concert. Passing that test is not trivial, whoever — or whatever — did the design work.
Why it matters: chip design has long been treated as one of the most specialized forms of engineering, and a demonstration like this is an early, informal signal that AI models are being pointed at that domain — and producing designs complete enough to run real software.