Ubisoft has announced the PC version of Tom Clancy’s Rainbow Six Siege will have a friend referral program launching today.

The new refer-a-friend program will allow all existing PC players the ability to give up to four friends full access to the game this weekend. Players will need to visit rainbow6keys.ubi.com to earn their friends’ keys, which won’t restrict their play in any way this weekend only.

Free weekend access starts later today at 3:01pm PST and will last through Sunday, December 20 at 9:01pm PST, although recruits can begin pre-loading the game right now through Uplay.

Those who refer friends this weekend will be rewarded with a 24-hour Renown Boost that will be sent out shortly after the refer-a-friend program ends. Recruits who end up purchasing Rainbow Six Siege will receive a 25% discount of the full price from the Uplay Shop and will be able to keep their in-game progress.