negator2vc
Scholar
HoMM 3, Dungeon Keeper 1-2 are some games with fixes.Sounds nice, but I've checked and it seems to be literally nothing. Like "verifying cloud saves work" or "confirming compatibility for win 10/11" for games I've played on modern gaming pc previously with no noticeable problems.
I did not notice a single update that would fix an actual classic, good old game, for which the GOG release has problems running properly or where they say it runs on modern systems, but it's a lie (Age of Wonders 2/SM, Incubation, Nox etc.).
I haven't checked the fixes since I use Wine/Linux or fan made engines to play old windows games.