<P> The game features an artificial intelligence system by which hostile human enemies react to combat . If enemies discover the player, they may take cover or call for assistance, and can take advantage of players when they are distracted, out of ammunition, or in a fight . Player companions, such as Ellie, can assist in combat by throwing objects at threats to stun them, announcing the location of unseen enemies, or using a knife and pistol to attack enemies . </P> <P> The online multiplayer allows up to eight players to engage in competitive gameplay in recreations of multiple single - player settings . The game features three multiplayer game types: Supply Raid and Survivors are both team deathmatches, with the latter excluding the ability to respawn; Interrogation features teams investigating the location of the enemy team's lockbox, and the first to capture such lockbox wins . In every mode, players select a faction--Hunters (a group of hostile survivors) or Fireflies (a revolutionary militia group)--and keep their clan alive by collecting supplies during matches . Each match is equal to one day; by surviving twelve "weeks", players have completed a journey and can re-select their Faction . Killing enemies, reviving allies, and crafting items earn the player parts that can be converted to supplies; parts can also be scavenged from enemies' bodies . Players are able to carry more equipment by earning points as their clan's supplies grow . Players can connect the game to their Facebook account, which alters clan members' names and faces to match the players' Facebook friends . Players have the ability to customize their characters with hats, helmets, masks, and emblems . </P> <P> In September 2013, an outbreak of a mutant Cordyceps fungus ravages the United States, transforming its human hosts into cannibalistic monsters known as infected . In the suburbs of Austin, Texas, Joel (Troy Baker) flees the chaos with his brother Tommy (Jeffrey Pierce) and daughter Sarah (Hana Hayes). As they flee, Sarah is shot by a soldier and dies in Joel's arms . In the twenty years that follow, most of civilization is destroyed by the infection . Survivors live in heavily policed quarantine zones, independent settlements, and nomadic groups . Joel works as a smuggler with his partner Tess (Annie Wersching) in the quarantine zone in the North End of Boston, Massachusetts . They hunt down Robert (Robin Atkin Downes), a black - market dealer, to recover a stolen weapons cache . Before Tess kills him, Robert reveals that he traded the cache with the Fireflies, a rebel militia opposing the quarantine zone authorities . </P> <P> The leader of the Fireflies, Marlene (Merle Dandridge), promises to double their cache in return for smuggling a teenage girl, Ellie (Ashley Johnson), to Fireflies hiding in the Massachusetts State House outside the quarantine zone . Joel, Tess, and Ellie sneak out in the night, but after an encounter with a patrol, they discover Ellie is infected . Full infection normally occurs in under two days, but Ellie claims she was infected three weeks ago and that her immunity may lead to a cure . The trio make their way to their destination through hordes of the infected, but find that the Fireflies there have been killed . Tess reveals she has been bitten by an infected; believing in Ellie's importance, Tess sacrifices herself against pursuing soldiers so Joel and Ellie can escape . Joel decides to find Tommy, a former Firefly, in the hope that he can locate the remaining Fireflies . With the help of Bill (W. Earl Brown), a smuggler who owes Joel a favor, they acquire a working vehicle . Driving into Pittsburgh, Pennsylvania, Joel and Ellie are ambushed by bandits and their car is wrecked . They ally with two brothers, Henry (Brandon Scott) and Sam (Nadji Jeter); after they escape the city, Sam is bitten by an infected, but hides it from the group . As his infection takes hold, Sam attacks Ellie, but Henry shoots him dead and commits suicide out of grief . </P>

What are the zombies called in the last of us