If you've never played Rainbow Six: Siege or NBA 2K18, you'll have the opportunity to do so this weekend. Until Sunday 18th of February, Microsoft is offering you, me, them, everybody the opportunity to download and play them for free, on Xbox One and 360. And that's not all; even if you don't have Gold membership, you'll be able to play and get online. "Be careful though, not all games will not benefit from this offer. For more information, visit the event website." The event started today, so grab your friends and find the right game for you and yours. You can find more information here.