Microsoft is unlocking the online multiplayer features in the Xbox 360 so that all owners of the console can play games online for free from Friday, May 1 to Sunday, May 3. Normally, playing online games requires a paid subscription to Xbox Live Gold.
If you are signed up for a free Xbox Live Silver account, that means you can play games online with friends like Battlefield Hardline, Call of Duty Advanced Warfare, and the Grand Theft Auto Online Heists add-on for GTA V for the entire weekend.
The free multiplayer online time period is for all regions where the console is sold. Microsoft does say that not all Xbox 360 games with online multiplayer will be unlocked for free this weekend but it did not provide a list of those titles.