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The marines are the playable characters in Alien Swarm. They all have different skill sets based on their class that differentiate between each marine. Additionally there are some non-playable characters ingame too.

Playable Characters[]

In the Source versions of Alien Swarm there are 8 playable IAF marines in 4 classes and 2 NPCs:

Officers[]

The Officer uses Officer Skills, and applies damage and defense buffs to nearby squadmates. They are harder to kill than most marines.


Special Weapons[]

The Special Weapons marine uses Special Weapons Skills and has a higher overall damage capability. They are good at mowing down swarms.


Medics[]

The Medic uses Medic Skills, and has access to a variety of mass or singular healing tools to heal friendly marines and counter infestations from parasites.


Techs[]

The Technical Specialist uses Tech Skills, and can hack security consoles. They are necessary for the completion of most missions.


Non-Player Characters[]


Alien Swarm 2010 Notes[]

Born from an cancelled sequel - named Infested - for the 2k4 mod, a few things were recycled back then.

  • Vegas, which was planned to make his first appearance in Infested.
  • Textures for marines from the 2k4 sequel can be found in the game files, which include textures for all classes + 2 textures for an unique female marine model.

Alien Swarm 2K4 Notes[]

In the original Unreal Tournament 2004 mod some things were different.

  • Officers were Explosives marines
  • Special Weapons were Special Weapons Marines
  • Medics were Medical Officers
  • Technical Specialists were Technical Marines.
  • IAF was named ISAF.
  • The Allied Systems from the original game later became one half of the Interstellar Alliance alongside the Core Systems.
  • All characters remain the same in the Valve version, except for Flynn who was replaced by Vegas.
  • In the original game, Williams was a black Android.

See also[]


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