Games like Alien Swarm
Games like Alien Swarm include HELLDIVERS™ 2, Team Fortress 2, PUBG: BATTLEGROUNDS, Apex Legends™, and Dota 2. We matched them by the tags players give Alien Swarm on Steam (Free to Play, Action, Multiplayer, Online Co-Op, and Aliens): closest matches first, and among equally close ones the better-known games.
HELLDIVERS™ 2
Shared: Online Co-Op · Multiplayer · Action
Team Fortress 2
Shared: Free to Play · Multiplayer · Action
PUBG: BATTLEGROUNDS
Shared: Multiplayer · Shooter · Action
Apex Legends™
Shared: Free to Play · Multiplayer · Action
Dota 2
Shared: Free to Play · Multiplayer · Action
Counter-Strike 2
Shared: Multiplayer · Action · Shooter
Left 4 Dead 2
Shared: Co-op · Multiplayer · Action
Marvel Rivals
Shared: Free to Play · Multiplayer · Action
Halo Infinite
Shared: Free to Play · Multiplayer · Action
Warframe
Shared: Free to Play · Action · Online Co-Op
The First Descendant
Shared: Free to Play · Multiplayer · Online Co-Op
Delta Force
Shared: Free to Play · Multiplayer · Action
Once Human
Shared: Free to Play · Multiplayer · Action
Overwatch®
Shared: Free to Play · Multiplayer · Action
Paladins®
Shared: Free to Play · Multiplayer · Action
ARC Raiders
Shared: Multiplayer · Online Co-Op · Shooter
Destiny 2
Shared: Free to Play · Multiplayer · Co-op
Aliens: Fireteam Elite
Shared: Co-op · Action · Aliens
PAYDAY 2
Shared: Co-op · Action · Multiplayer
STAR WARS™ Battlefront™ II
Shared: Multiplayer · Shooter · Action
Warhammer 40,000: Space Marine 2
Shared: Co-op · Action · Multiplayer
HELLDIVERS™ Dive Harder Edition
Shared: Co-op · Online Co-Op · Action
Starship Troopers: Extermination
Shared: Action · Online Co-Op · Co-op
World of Warships
Shared: Free to Play · Multiplayer · Shooter