Games which wish to be included in the Games for Windows platform must meet certain requirements regulated by Microsoft. These include,[3] but are not limited to:
* An "Easy Install" option that installs the title on your PC in the fewest possible steps and mouse clicks
* Compatibility with the Windows Vista Games Explorer (see below)
* Installs and runs properly on x64 versions of Windows Vista and is compatible with 64-bit processors (though the game itself can be 32-bit)
* Supports normal and widescreen resolutions, such as 4:3 aspect ratio (800 x 600, 1024 x 768), 16:9 aspect ratio (1280 x 720), and 16:10 aspect ratio (1152 x 720, 1280 x 800)
* Launching from Media Center (Windows Vista Home Premium and Windows Vista Ultimate have Media Center)
While not a required feature at this time, some Games For Windows certified games are playable during the game's installation, making PC games more convenient and more similar to console games, in that players aren't required to wait until the game's installation is complete before they can play the game. This feature is known as Tray and Play but is only available in Halo 2 as of now.