Games like German Fortress 3D
Games like German Fortress 3D include Hotline Miami, Maximum Action, DOOM Eternal, Hotline Miami 2: Wrong Number, and Wolfenstein II: The New Colossus. We matched them by the tags players give German Fortress 3D on Steam (Indie, Action, Violent, Gore, and Retro): closest matches first, and among equally close ones the better-known games.

Hotline Miami
Shared: Action · Violent · Indie

Maximum Action
Shared: Action · Gore · Violent

DOOM Eternal
Shared: Action · Gore · FPS

Hotline Miami 2: Wrong Number
Shared: Gore · Violent · Action

Wolfenstein II: The New Colossus
Shared: Action · Gore · FPS

Prodeus
Shared: Action · Gore · Retro

Serious Sam Fusion 2017 (beta)
Shared: Action · Gore · Indie

Bright Memory: Infinite
Shared: Action · Indie · FPS

Turbo Overkill
Shared: Action · FPS · Indie

HROT
Shared: Retro · Indie · FPS

My Friend Pedro
Shared: Indie · Action · Gore

The Citadel
Shared: Gore · Retro · Indie

Serious Sam 4
Shared: Action · Gore · FPS

Paint the Town Red
Shared: Action · Violent · Gore

Chivalry: Medieval Warfare
Shared: Action · Gore · Violent

ULTRAKILL
Shared: Gore · FPS · Indie

DOOM 64
Shared: Action · FPS · Retro

Hellbound
Shared: Indie · Action · Violent

Warhammer 40,000: Boltgun
Shared: Retro · Action · FPS

Trepang2
Shared: Gore · Violent · FPS

DOOM
Shared: Action · Gore · FPS

Wolfenstein: The Old Blood
Shared: Action · FPS · Gore

Call of Duty®: WWII
Shared: FPS · World War II · Action

GoreBox
Shared: Gore · Violent · FPS