I have been using a computer with Windows 8.1, and bought quite a few games that run on Windows 8.1, I just bought a new computer with Windows 10 - if a game on GOG.com says it runs on XP through Windwos 8, will they work on Windows 10? Sorry if this is a dumb question, I don't know much about this and any help is appreciated!
Well, if you buy them here then the game page tells you what os it runs on and what you can get support for. Personally I have yet to find a game which doesn't run on win10. Not saying there are not any, but it's not a massive change from win 7 or 8.x to 10. True, you might need some drivers, or a certain version of c++ extension, or enabling direct play, but most should be runnable. Make sure you install outside windows folders, and check the various pages out there if you have problems: pc gaming wiki, moddb, etc.