Left 4 Dead Four friends versus the horde

You pick one of four survivors and fight your way from Ground Zero toward rescue, blasting through crowds of infected that sprint at you from every doorway. Nobody carries a run alone: a Hunter pouncing on your head or a Smoker dragging you off a roof ends badly without a teammate's help. Ammo and medkits are scarce, so you decide who gets the pills and who limps on. Two or three hits and the screen goes red, which keeps every street crossing honest. It is pure survival, and it works because the game refuses to let you be a one-person army.

Behind every campaign sits the AI Director, which reads how you are doing and stages the horror accordingly. Push through a map fast and it throws bigger crowds at you; bleed your way through and it eases off, maybe drops a medkit where you need one. It decides when a horde hits, where weapons and ammo sit, and when a Tank shows up right before the safe room. The result feels like a horror film that reacts to you: tension builds, breaks, and builds again, and you never quite know which corner holds trouble. Every run plays out differently because of it.

The common infected are the backdrop; the real trouble has names. The Hunter leaps from silence onto your chest. The Smoker snags you with its tongue and reels you in from across the street. The Boomer vomits on you and summons a horde. The Witch sits crying in the dark, and everyone whispers do not shoot her until someone shoots her. The Tank is a walking building that everyone's plan reduces to one word: run. Learning what each one sounds like before you see it is half the game, and the sound design makes sure you dread every cue.

The four campaigns, each built like a horror movie with five maps and credits at the end, are the core, playable solo with bots or with up to three friends. Versus flips the table: four on four, one team plays survivors racing to rescue while the other controls the special infected trying to stop them. Survival mode strips it down to one question, how long can you hold out against endless waves, with the timer as your score. The Sacrifice add-on adds a campaign where, at the finale, you decide which survivor gives their life so the rest escape. Few co-op games offer this many ways to argue with friends.