I tried to find that out and it's actually pretty difficult only with means of the website. In the store you can select XP or Vista and the number of games supporting XP and Vista is actually pretty high, but you cannot select "only XP or Vista" which would translate to "(XP or Vista) and not (7 or 8 o 10 or Linux or Mac)" because this functionality is missing.

gogrepo can probably do it or magog or the new database.

Easy with MaGOG, returns exactly 4 games listed as compatible with XP and Vista only: Gorky 17, Gothic (1), The Interstate '76 Arsenal and Tex Murphy: Overseer. And with GOG dropping compatibility for those for newer additions, don't see that list being added to invisibly for MaGOG now that it no longer tracks new additions.

Steam doesn't "support" much of anything though. Klumpen is poorly reasoning that since Steam has some pages that list XP in the requirements there is "support" which isn't necessarily true.

The other issue is Steam doesn't have a troubleshooting based refund policy. They have two hours/2 weeks (whichever happens first) no questions asked refunds. GOG's entire refund system revolves around tech support. How are they going to handle that if they were to sell and list stuff they do not actually support?

If the problems occur during the first two hours of play (like doesn't start on my XP), then you should be okay with Steam. The no questions asked refund system on Steam can be used to find out about compatibility, but one must be quick.

Steam users with XP could actually assemble a list of games running on XP, if they wanted.

There's not that many Steam users with XP, and most of them likely reside in places like Russia, China, Brazil, etc. It's less than 1% of Steam users and dropping month by month. Valve could actually wholesale drop support with the client for XP Service Pack 2 and XP Service Pack 3 without causing much of a stir.

XP over on Steam is actually a much more dangerous prospect for holdouts since the client isn't optional on a lot of the library and swapping out DLLs and stuff is not an option either.

I´m from Brazil and I currently use dual boot with Windows 10 and Linux Deepin Os(I´m a computer programmer). Also everywhere I go, including my work and college is either using Windows 10/8/7 or some Linux Distribution. I dont think XP is as popular here as you think it is.

Why do I get the impression that everyone thinks we are a backwards Country?

I don't live there obviously so I can't say, but I also know XP seems to have the strongest entrenchment in regions where there is huge economic disparity or messed up pricing/market access. I know hardware costs there tend to be like 1.5 to 4 times USD value. Multiplayer games.

Russia (2nd, 10.31%), China (3rd, 7.3%) and Brazil (4th, 4.79%) are actually three of the four largest countries represented on Steam. The largest being the US with 15.58% of the Steam userbase. So the <1% for XP amongst Steam users doesn't really indicate anything in regards to where those users might be located.

Well at least for Middle/High Class families here, I can confirm there is not that big economic disparity that you are talking about. Most people that I know that are gamer enthusiasts own the latest hardware required to run the latest releases like Doom or Rise of Tomb Raider in 4k. And even those that arent that big of hardware enthusiasts manage to buy a PC decent enough to run the latest games without lag or a console such as the Xbox One or Ps4. My family, friends and most people that I know in my University Campus and Work have one of the latest Iphones or smartphones.

I myself own a PC with 32gb of ram, Nvidia 1080, one of the latest I7 and 4 tb of HD.

Sure there is some economic disparity between our countries. But its not like we are Africa. Most Hardware here isnt expensive because of messed up market pricing, but because of taxes imposed by our government. However most Middle Class families still manage to keep up with the latest hardware innovations around the world.

Edit: I dont use GOG because I´m too "poor" to buy a great pc or console to run the latest games. I use GOG because I´m an enthusiast I like to play both old and new games. I dont care if they were made a month ago or 30 years ago.

Was mostly going off anecdotal experience from arguing on the Steam forums. Some of the most passionate 32bit/XP users have come from those regions and those regions really really heavily favor low requirements F2P MP games (and balk when patches come through that increase requirements).

Granted this is far from scientific. *shrug*
Apologies if I came off poorly or anything, I know a few people from Brazil but they are all upper middle-class so they can afford the horrific prices you guys see on tech.

I remember when GOG launched in 2008. George W Bush was still president, Fallout 3 hadn't been released yet, and Half-Life 2: Episode 2 was the most recent Half-Life. Most relevantly, Vista was Microsoft's newest operating system and I remember a thread where someone complained that GOG didn't officially Windows 98, an OS that was 10 years old at the time. I guess you could say this thread is a testament to XP's 16-year-and-counting legacy.

But XP is super old and not used as much as people think, and making sure all of the thousands of games on GOG support it is counter-productive. I expect another 8-10 years from now (hopefully that long) we'll see a thread like this but with Windows 7 instead.

Dont want to be a jerk but with this logic you may as well asking for windows 95 compatibility

XP is old and outdated, let it go. You are living in a dream world if you think operating systems will be officially supported for the end of times

Actually feel free to do whatever you want just dont be mad at companies who have bigger priorirites than desperately wasting ressources to support an ancient operating system that is literally a harakiri to get even on the internet with due to the so many safety holes it has.

ever heard of certain clause of "we hold the right to change the terms of service at any given momeent" etc part?

Unless GOG explicitly promised to keep support for windows xp, I think its perfectly legal.

Certainly is. Even F/OSS programs and operating systems drop support for old things. I certainly don't expect a program to work on Fedora Core these days, and nobody bats an eye when PPC support drops. And many programs are starting to drop 32-bit support. Fedora 24 for example is heading towards EOL, and after that, it's upgrade or nothing.