About games hard to run, back on Win7 I couldn’t get Dark Colony installer to run with any compatibility mode (luckily, you can run the game just by copying the files from the CD). StarCraft had some graphics issue but just on menus (I think on Win10 as well), and I couldn’t play Outwars at all (although GOG version has some fix for modern Windows). A GOG game I bought that I couldn’t run on modern windows was Slave Zero.