I'm a huge fan of this game, have sunk in multiple hours on it on my ps4, but i want to play it on my Linux PC, but it says Witcher 3 is not support for Linux, I'm finding out about Lutris, but when will there be an official GOG Linux version for this game?

Considering how long it's been probably never.

Many publishers seem to be fine with Linux users running WINE or Proton to play there games on Linux. I have seen a few studios openly say to just use Proton it runs fine.

that's sad, how do i run it with wine or proton? isn't proton like a steam thing? i know the steam version already supports linux but i wanna get the gog version

Stean version is just running under Proton.

Proton is just a variation of WINE so you can install and run it without Steam.

Your easiest options would be to use The Lutris Launcher or Heroic Game Launcher as they handle all the backend stuff with WINE.

There are users more capable than I about manually installing the game with WINE you could search the forum to see if this has been addressed in the past or maybe one will pop in to explain it here.

From what I understand Proton is a colection of mostly open source tools with some optimizations from Valve. It's possible to use it outside Steam but what we really need are the tools like DXVK and Wine.

There are several ways to setup GOG games on Linux.

1- if you want to use a launcher, you can use Lutris or Heroic and connect your GOG account, is mostly a 1 button click after the initial setup.

2- Use Lutris or Bottles to install your game using the offline (backup) installer, no need to connect any account but most likely you'll need internet access to download some required dependencies.

3- Use WINE yourself and setup everything manually. Probably the most flexible and clean way but I'm way too lazy for doing everything manually, since there are awsome tools like Lutris or Bottles.

4- Use Steam and add the game to Steam's library. It makes no sense to use Steam just for one game but I'll leave the option for those who want.

Some notes:
To install Lutris follow the instructions on the website, pretty straightfoward to use.

To use Bottles (my favorite and the most straightfoward method, IMO) the only way to install is as a flatpak. That means that the program is self contained and it has no access to files outside it's own folder, you either need to move the game files in the Bottles folder or install Flatseal to gain access to all folders.
May seem confusing at first but it makes sense after a couple of minutes. There's plenty of options but the defaults for "gaming bottle" work in most cases.

so Lutris seems to be the way, i just wish there was an official release, if i were to do it through lutris, would i just buy the game on gog? cause i havent bought it yet, & in my cart it says 'not supported in linux, but if i did it with lutris it would work, correct?

In Lutris you can link your GOG account then refresh and it will display your library in the Launcher, you can then select the game you want to play and install.

Also, worth mentioning, there are two Witcher 3 versions, the good old version wich is available on GOG extras page (don't know about other shops) and the next gen version (Unreal engine?).
It seems the newer version may have a issue here and there and requires quite a bit more powerfull hardware.

I'm also a Linux user and I just recently got to playing Witcher 3 as well (although I bought it a while back). It runs just as well as any native port. Just buy the game as you normally would on GOG and then use Lutris or Heroic Games Launcher to install the game after connecting your GOG account.

The interface in Lutris is a bit convoluted, though, so I would recommend you to try using the Heroic Games Launcher as it's just a one-click process to install any game from GOG or Epic Games Store. HGL provides some other niceties as well, like cloud saves and playtime synchronization for GOG.

Guide: https://www.youtube.com/watch?v=v9tb1gTTbJE

HGL: https://flathub.org/apps/com.heroicgameslauncher.hgl

That warning appears because we are getting the Windows version and GOG doesn't officially support running Windows games on Linux. However, thanks to Proton and WINE, Windows games run pretty well on Linux, so you can just disregard that warning.

If you're worried about a game running, just check out ProtonDB: https://www.protondb.com. You can also check out the Steam Deck rating for comparison, since the Steam Deck is also running Linux under the hood.

You could probably install the official Wine straight from the WineHQ website instead of any other forks, run the installer for it and then launch the game. It'll likely work.

Or you could use play.it though I haven't tried it because the above just works for me.

rip, it wont let me use my card, is it not possible to buy games on GOG from India?

Disclaimer: I am the original author and main developer of ./play.it, so everything below this line is obviously biased.

If you already know how to use WINE directly, ./play.it would not bring any big benefit.

The only extras it does for The Witcher 3 is to install DXVK in the dedicated WINE prefix (something you probably already do) and to generate native packages (.deb for Debian, .pkg.tar.zst for Arch Linux, etc.) for a streamlined installation process. Well, and a couple other things but these are minor and not related to the way the game runs (like diverting saved games to ~/.local/share/games/the-witcher-3 or the ability to skip the expansions and only install the base game).

For this specific game it is mostly useful for people who do not already know how to work with WINE, and for people who would like all their games to be installed through their distribution-provided packages manager.

so i managed to get the game, i installed the wine thing in lutris, but when i installed the game it for some reason it stores things in my smaller ssd with my OS on it & causes my ssd not have enough space, even though it has more than 200gb of free space, i specifically chose a different installation but still this happens

./play.it would have let you chose the install path (see the usage of --prefix in the output of "play.it --help"), but if you would rather go with Lutris I won’t be able to help you. Last time I gave it a try, I never even managed to get it to install a game from a GOG installer I already downloaded.