Microsoft Windows 8 has the usual built in games – solitare, Minesweeper. But, they have been updated for the new OS. Minesweeper has updated graphics. And for those that are into Xbox achievements, they are now included. Using the new moniker Xbox Windows brand for the games, you can gain achievements in the best games available for any OS on any platform: Minesweeper and Solitare! Ok, that last part was a bit of a stretch.
The "Xbox Windows" branding seems to cover games from the Windows Store, which will also offer titles that were previously released on Xbox Live Arcade, like Ms. Splosion Manand Rocket Riot. "Xbox Windows" does not appear to replace the existing Games for Windows Live label, which Microsoft insisted as recently as April will stick around in Windows 8.