Left4Dead: Alien Invasion in No Mercy Campaign! (Alien Mod)

Trying out an epic aliens mod in Left4Dead! The aliens are themed after the classic alien characters from the original film series! This is a full play through of the No Mercy campaign, but with aliens instead of the classic zombies.

The aliens have green blood and emit a green gas that fills the air as they’re annihilated. A separate mod was used to change the color of the spitter’s spit to blue instead of green in order to not confuse the spit from the green blood.

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