Ubisoft has announced a limited-time event for Rainbow Six Siege called M.U.T.E. Protocol: Flesh and Metal. The event will run until August 23, and players will have the opportunity to unlock new cosmetics and participate in a new mode called Arms Race.

M.U.T.E mode is set in a version of the Tower that has been taken over by the Brain. When players kill an opposing team member, they'll upgrade to a new weapon tier. Once a player is killed, they'll quickly spawn back in, but they'll be one weapon tier lower than they were before dying. There'll also be multiple power-ups, such as Power Dash, allowing players to run through walls scattered across the map for players to use.

The game's objective is to obtain the highest weapon tier, the Golden Hammer. To win a round in M.U.T.E, players must use the Golden Hammer to smash the Brain's shields on the map.