Games for Windows – Live
Games for Windows – Live or GFWL is a deprecated online gaming service used by Games for Windows–branded PC titles that originally enabled Windows PCs to connect to Microsoft's Live service. Users, each with a unique Gamertag (the Microsoft username service for gaming that began on Xbox Live), were able to play online, keep track of their friends' status, send and receive messages, gain and keep track of Achievements and associated Gamerscore, voice chat across platforms (removed in 2010), and more.