During gameplay, Snake can summon A.I.
As Punished "Venom" Snake, the player must sneak through enemy-guarded locations, moving from cover to cover to avoid detection. The second mode is the base expansion system in the single-player campaign, where the player's base of operations can be attacked by other players who will want to steal the resources stored in that base. Big Boss awakens from a 9-year coma, caused by the events in Metal Gear Solid V: Ground Zeroes.