Tomb Raider 1-3 are here on GOG, but why not the Director's Cut contents?:

Tomb Raider: Unfinished Business
Tomb Raider II: The Golden Mask
Tomb Raider III: The Lost Artifact

Does anybody know what's the problem with these contents, why they are nowhere to be found?

Square Enix, when was the last time they released anything here ? they have abandoned GOG.

Last time was Hitman: Blood & Money and Hitman Absolution, released on GOG in 2019. So they didn't abandon.

That was IO Interactive, they went independent and kept their IP so it was not thanks to Square Enix.

You are right, sorry. But it still doesn't explain what is the problem with the Director's Cut contents, because it isn't on Steam either.

Unfinished Business and Golden Mask could appear here.

Lost Artifact was sold as a separate standalone expansion though, so if it ever appears, you would have to purchase it separately.

That is the reason why you can freely download the first two but only the demo is freely available for the Lost Artifact. So you either have to hunt it down on a disc, or acquire it through some "other" means.

Legal reasons of some sort probably. Just get them where you can.

bump

Thank you, great advice! Nevertheless it would be great to have an official release on GOG. So please everyone vote in the wishlist for these expansions.

post the links in your o.p. and maybe bold the text next to it "wishlist links: (links)"