Games like FLOSS
Games like FLOSS include Strike Force Heroes, THE FINALS, 12 is Better Than 6, Pixel Gun 3D: PC Edition, and Halo Infinite. We matched them by the tags players give FLOSS on Steam (Action, Shooter, Arena Shooter, Top-Down Shooter, and 2D): closest matches first, and among equally close ones the better-known games.

Strike Force Heroes
Shared: Action · Shooter · Arena Shooter

THE FINALS
Shared: Shooter · Action · Free to Play

12 is Better Than 6
Shared: Action · Shooter · Top-Down Shooter

Pixel Gun 3D: PC Edition
Shared: Shooter · Action · Arena Shooter

Halo Infinite
Shared: Shooter · Action · Free to Play

Aimlabs
Shared: Shooter · Action · Free to Play

Apex Legends™
Shared: Shooter · Action · Free to Play

War Thunder
Shared: Action · Free to Play · Combat

Paladins®
Shared: Shooter · Action · Free to Play

My Friend Pedro
Shared: Action · Shooter · Indie

Escape From Duckov
Shared: Action · Shooter · Top-Down Shooter

SNKRX
Shared: Arena Shooter · Top-Down Shooter · Shooter

Deployment
Shared: Shooter · Arena Shooter · Top-Down Shooter

Delta Force
Shared: Shooter · Action · Free to Play

SUPERHOT
Shared: Action · Shooter · Indie

Hotline Miami
Shared: Action · Indie · Top-Down

Relic Hunters Zero: Remix
Shared: Action · Top-Down Shooter · Free to Play

Broforce
Shared: Action · 2D · Shooter

Call of Duty®: Warzone™
Shared: Shooter · Action · Free to Play

ShellShock Live
Shared: Action · 2D · Shooter

KovaaK's
Shared: Action · Shooter · Indie

Police Stories
Shared: Action · Top-Down Shooter · Shooter

Century: Age of Ashes
Shared: Action · Free to Play · Shooter

Chippy
Shared: Arena Shooter · Top-Down Shooter · Shooter