An anonymous reader writes "Ever since it launched the Xbox, Microsoft has had a fickle relationship with Windows as a gaming platform. On one hand PC gaming is a major driver of hardware and operating system sales, but on the other hand the PC is inherently less secure than the Xbox console, with piracy much more likely to impact sales of a PC title than a console one. Games for Windows Live has been an attempt to bring some of the success of Xbox Live to the PC, and while many games have shipped with support for Games for Windows Live, it hasn't exactly been a favorite of PC gamers. After all these half-hearted efforts, the last thing anyone expected was for Microsoft to announce new PC-only reboots of two classic game franchises, Flight Simulator and Age of Empires. But yesterday it did just that, announcing a massively multiplayer version of Age of Empires and a new Flight Simulator called Flight. The big question is whether Microsoft can make Games For Windows Live relevant in a market where Steam has taken hold, or if it's too late."