Games like The Wastes
Games like The Wastes include DOOM Eternal, Chivalry: Medieval Warfare, Paint the Town Red, Serious Sam 4, and Serious Sam Fusion 2017 (beta). We matched them by the tags players give The Wastes on Steam (Indie, Action, Gore, Violent, and Multiplayer): closest matches first, and among equally close ones the better-known games.

DOOM Eternal
Shared: Gore · Action · FPS

Chivalry: Medieval Warfare
Shared: Action · Gore · Multiplayer

Paint the Town Red
Shared: Gore · Action · Violent

Serious Sam 4
Shared: Action · Gore · FPS

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

Call of Duty®
Shared: Action · Multiplayer · FPS

Killing Floor 2
Shared: Gore · Multiplayer · FPS

DOOM
Shared: Action · Gore · FPS

Left 4 Dead 2
Shared: Multiplayer · FPS · Action

Hotline Miami
Shared: Action · Indie · Violent

RAGE 2
Shared: Action · Gore · FPS

Bright Memory: Infinite
Shared: Action · Indie · FPS

Ready or Not
Shared: FPS · Multiplayer · Action

Blood and Bacon
Shared: Gore · Action · Multiplayer

Mortal Kombat 11
Shared: Gore · Action · Violent

Serious Sam 3: BFE
Shared: Action · Gore · FPS

My Friend Pedro
Shared: Indie · Action · Gore

Call of Duty®: Warzone™
Shared: Action · FPS · Multiplayer

Pavlov
Shared: Action · Multiplayer · FPS

Back 4 Blood
Shared: Gore · Multiplayer · FPS

Insurgency: Sandstorm
Shared: FPS · Action · Multiplayer

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

Mortal Kombat X
Shared: Action · Gore · Violent

Battlefield™ 1
Shared: Multiplayer · FPS · Action