Lastly, there's Versus, serving as Left 4 Dead's competitive mode. Versus Survival is a sub-mode wherein real players take control of Special Infected instead of the AI to fight against the survivors. Times are recorded and corresponding medal rewards are given if they achieve a certain amount of time. Next is the Survival mode where players fight off waves of the infected for as long as possible.

Alternatively, there's the Single Player campaign where a player takes control of one of the survivors, and the rest are AI-controlled. Here, players take control of the 4 survivors as they play through chapters and reach the checkpoint.

The first one is the Campaign mode, also known as Co-op. There are 4 game modes to choose from in Left 4 Dead. Along the way, you will encounter various characters who offer aid-or poses as threats in some cases. Make your way through city streets, sewers, and abandoned buildings towards your next checkpoint. Left 4 Dead takes players along for the ride as they witness the story unfold and experience how these survivors struggle as they make their way from area to area.

As they traverse the dangerous landscape before them, they have to use tools and weapons that they find to help them survive. The survivors are alerted to the existence of the last few remaining safe zones left on the coast and try to make their way towards these locations to hopefully find refuge against the ever-growing numbers of the infected. As they try to escape the city, dangerous mutations were developing in some hosts.

Two weeks into the outbreak, 4 survivors developed an immunity against the disease. It's set in the aftermath of a zombie outbreak on the East Coast. Left 4 Dead is a multiplayer survival horror game that was developed by Valve and was released back in 2008.

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