From Friday, February 26th through Monday March 1st you will be able to purchase the award winning game Batman: Arkham Asylum for 75% off through Games on Demand on Windows. Plus, each weekend in March will bring a new discounted Games on Demand title. I’ll post a note on my Twitter account each Friday to let you know what G4W- LIVE title is on sale that weekend.
Remember you’ll need to download the free Games for Windows – LIVE client and when you purchase games within the client you can use either points or credit cards.
Edit: Yes, this offer will be available in all regions where Games on Demand are supported.