The senior global director of PC and mobile gaming at Microsoft, Kevin Unangst, told Kotaku in an interview that Windows Phone 7 is the company's mobile platform for games.
This, according to him, is because, the same people behind the Halo franchise and the same development staff work on this, making this essentially, the Xbox 360 portable.
Microsoft has revealed that it has sold more than 1.5 million Windows Phone 7 phones that can play Xbox 360 games and are compatible with Xbox Live.
There are already 5500 apps in its marketplace although only a fraction of these (around 60) are Xbox Live-capable games.
The problem is that many game developers have yet to commit to the platform at a time where iOS is the dominating one and Android likely to be the second best.
Furthermore, the first generation Windows Phone 7 platform is not powerful enough to handle the demanding graphics of say, Infinity Blade.
The news come as the Xperia Play - the first true Android gaming phone - is set to be launched at the Mobile World Congress in Barcelona.