Alien Swarm (2010)

Co-operative multiplayer game and complete code base available for free.

• 21,650 Steam reviews, so it found an audience
• 94% positive
• released 2010

Tags

• Free to Play
• Co-op
• Action
• Multiplayer
• Online Co-Op
• Aliens
• Shooter
• Sci-fi
• Top-Down
• Top-Down Shooter
• Survival
• PvE
• Third Person
• Class-Based
• Team-Based
• Third-Person Shooter
• Moddable
• Singleplayer
• Strategy
• Adventure

See Alien Swarm on the map of Steam · Steam store page