Games like Project Polygun
Games like Project Polygun include Hotline Miami, Blood Trail, Hard Bullet, DOOM Eternal, and GORN. We matched them by the tags players give Project Polygun on Steam (Action, Early Access, and Violent): closest matches first, and among equally close ones the better-known games.

Hotline Miami
Shared: Action · Violent

Blood Trail
Shared: Violent · Action · Early Access

Hard Bullet
Shared: Action · Violent · Early Access

DOOM Eternal
Shared: Action · Violent

GORN
Shared: Action · Violent · Early Access

Paint the Town Red
Shared: Action · Violent

Mortal Kombat 11
Shared: Action · Violent

Middle-earth: Shadow of War
Shared: Action · Violent

Hotline Miami 2: Wrong Number
Shared: Action · Violent

Maximum Action
Shared: Action · Violent · Early Access

Mortal Kombat X
Shared: Action · Violent

God of War
Shared: Action · Violent

Wolfenstein II: The New Colossus
Shared: Action · Violent

Contractors
Shared: Action · Violent · Early Access

Devil May Cry 5
Shared: Action · Violent

171
Shared: Action · Violent · Early Access

G2 Fighter / 基因特工
Shared: Action · Early Access · Violent

My Friend Pedro
Shared: Action · Violent

Mortal Kombat 1
Shared: Action · Violent

Chivalry: Medieval Warfare
Shared: Action · Violent

Call of Duty®
Shared: Action · Violent

Sword With Sauce
Shared: Action · Violent · Early Access

Ghostrunner
Shared: Action · Violent

V.L.A.D.i.K
Shared: Action · Violent · Early Access