The previous post in this entry is even more impressive!
Very condensed tl;dr: winter games had a DRM that makes the game perform poorly if you enter wrong code; most of the cracks (including an "official" crack from 1996) skip it wrong and therefore you have a broken game; that includes gog.com version.
This person actually released a "patch" for gog.com version of the game.
> The previous post in this entry is even more impressive!
Yes, it also got a very warm reception here on HN:
I really like how well he explains the details and his "Sidebars" describing some core functionality of the underlying architecture. Link to that: https://mrwint.github.io/winter/writeup/writeup.html