What games are playable with an xbox controller?

All videogames under the format "Games for Windows (R)" can use an Xbox 360 controller, but to use an XBOX 360 controller for this type of game, you need a special adapter. Purchase a new XBOX 360 Wired Controller as all new controllers include a USB port adapter attached to the cable-jack that would normally fit into the slot on an XBOX 360 console. Look up "Games for Windows (R)" on wikipedia.org for more information.