[cml123]

This was posted on hackaday[0] last week with a link to a youtube video. In the video, the author of the project goes into depth about some of the challenges they encountered and changes they made in good technical detail.

I think the complaints in this thread are not in the spirit of HN. Let's do better.

0) https://hackaday.com/2026/06/06/a-raycast-fps-in-cobol/

[Gormo]

Direct link to the video: https://www.youtube.com/watch?v=qzpZQe7JT-o

It's quite interesting, and describes how the developer used COBOL to implement a raycasting algorithm and generate a stream of PPM images to to pipe into FFplay. There's zero evidence of this being written in Claude; there are multiple clips of the developer working in VSCode, where the Claude plugin doesn't even appear to be installed.