Hey guys im new to GOG, i saw there was some nintendo games available so i added them to my library, thing is i cant download any of them, what should i do? For example i want to play mario 64 DS and i cant download it

Now I am really curious as to where you see Nintendo games like "Super Mario 64 DS" on GOG...have a link to that particular page?

smiling nicely

I'm pretty sure GOG doesn't offer those games. >.>

I dont know, when i searched them i found a bunch
When i go on steam i dont see them, simply because they are not available on steam, then why are they on GOG?

You know the old saying: links or pics - or it didn't happen. ;)

I suspect you're using Galaxy, and not GOG website. And search results in Galaxy probably include other stores or some sort of a game database? I don't know. But I do know you'll not get shady free games through Galaxy.

The GOG Galaxy Search section has a lot of games that GOG doesn't offer, including romhacks. The idea is that you would add your games from other stores as a Collection of sorts. The games that GOG actually includes can be found below on the "All Games" section (see the attached image below).
https://www.gog.com/upload/forum/2024/08/360a12b660ec8d0640c73c7bcfe6033e4e3c60e6.jpg

"Owned games" Alright, that launcher is not very well designed

Do you have a Switch linked to your GOG Galaxy, where you own these games?

No i dont

No Nintendo account either?

Nop

I guess nintendo is scared of making money, could make their own PC launcher for old games, but no

No no, see, you got that wrong: Nintendo is very keen on making money...which is why they want you to buy their consoles, if you want to play their games.