# Daring coder gets Doom running with regular expressions at 180 seconds per frame, like playing 'correspondence chess with a shotgun' — nearly 14 million substitutions to render a frame at 80,000 substitutions per second

> Running the 1992 Doom on the most random piece of hardware around has become probably the most common unofficial programming challenge.

- **Source:** [Tom's Hardware](https://www.tomshardware.com/software/programming/daring-coder-gets-doom-running-with-regular-expressions-at-180-seconds-per-frame-like-playing-correspondence-chess-with-a-shotgun-nearly-14-million-substitutions-to-render-a-frame-at-80-000-substitutions-per-second?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6a689df87f5ab608f2018043)
- **Published:** 2026-07-28
- **Category:** Computers & IT
- **Tags:** #running #frame #substitutions #doom #expressions #regular #chess #coder
- **Canonical:** http://localhost:4321/a/6a689df87f5ab608f2018043

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_GearOpen's distilled summary. The full original article is published at Tom's Hardware (source link above); GearOpen does not republish the source's full text._