Microsoft Games for Windows - LIVE

Microsoft Games for Windows - LIVE screenshots

It is the most stable gaming platform for Windows

Alternative downloads

Voobly
A social platform in which you can play games and socialize with others.
2.1.50.3
FREE
Microsoft XNA Test Tool
The Games for Win Self-Certification is designed to showcase the Win platform..
1.0
FREE
Tams11 Software Gaming Lobby
It is a gaming community platform which allows you to play the Tams11 games.
1.7.9.1