Games like Swap Fire
Games like Swap Fire include Counter-Strike 2, Tom Clancy's Rainbow Six Siege, Aimlabs, Counter-Strike, and Counter-Strike: Source. We matched them by the tags players give Swap Fire on Steam (Action, Sports, eSports, Shooter, and Arena Shooter): closest matches first, and among equally close ones the better-known games.

Counter-Strike 2
Shared: Shooter · Action · FPS

Tom Clancy's Rainbow Six Siege
Shared: FPS · Shooter · eSports

Aimlabs
Shared: Action · Shooter · FPS

Counter-Strike
Shared: Action · Shooter · FPS

Counter-Strike: Source
Shared: Action · Shooter · FPS

Echo Point Nova
Shared: Shooter · Action · FPS

Call of Duty®: Black Ops III
Shared: Action · Shooter · FPS

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · FPS

KovaaK's
Shared: Action · Shooter · FPS

BioShock Infinite
Shared: Action · Shooter · FPS

Half-Life 2
Shared: Action · FPS · Shooter

Apex Legends™
Shared: Shooter · Action · FPS

Black Mesa
Shared: Action · FPS · Shooter

s&box
Shared: Action · Shooter · FPS

FragPunk
Shared: Action · FPS · Shooter

Battlefield™ 2042
Shared: Shooter · FPS · Action

Shotgun Farmers
Shared: Action · Shooter · FPS

Titanfall® 2
Shared: FPS · Shooter · Action

VLADiK BRUTAL
Shared: Action · Shooter · FPS

Paladins®
Shared: Action · Shooter · FPS

Call of Duty®
Shared: Action · Shooter · FPS

Far Cry 3
Shared: Action · FPS · Shooter

Robot Roller-Derby Disco Dodgeball
Shared: Sports · Arena Shooter · FPS

DOOM
Shared: Action · FPS · Shooter