With Games for Windows joining Xbox.com with Games for Windows Marketplace, Microsoft has decided to celebrate by giving away one million Microsoft Points, which can be won in denominations of 400 Microsoft Points apiece.
All you have to do is make a Games for Windows online purchase between now and August 1st and you'll receive an email code for your 400 MSP, which will be sent to your Windows Live ID email address. The claimed Microsoft Points are also eligible to be spent on the Xbox Live Marketplace as well as the Games for Windows Marketplace.
The offer is open to the first 2500 legal residents of the United States aged over 18, are limited to one 400 Microsoft Points code per person and must be redeemed by 30th June 2012. So, quick! Go bag 400 MSP for yourself while you can!