You can buy these through the XBOX app on your PC. They seem to be between $5 and $10 each, and function pretty much like the console versions. Multiplayer games also look like they retain that functionality, and ones with split-screen still have that as well. These appear to be faithful ports, and I wish they weren't locked to the XBOX ecosystem, but if you want to support efforts like this to bring older games to new generations, this is a way to do it, along with initiatives like the game conservation efforts at GOG.