Games like W.R.M.
Games like W.R.M. include 12 is Better Than 6, My Friend Pedro, DOOM Eternal, Hotline Miami, and Hotline Miami 2: Wrong Number. We matched them by the tags players give W.R.M. on Steam (Action, Shooter, Top-Down Shooter, 2D, and Post-apocalyptic): closest matches first, and among equally close ones the better-known games.

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

My Friend Pedro
Shared: Action · Shooter · Indie

DOOM Eternal
Shared: Action · Shooter · Gore

Hotline Miami
Shared: Action · Violent · Indie

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

HELLDIVERS™ 2
Shared: Shooter · Action · PvE

RUINER
Shared: Action · Top-Down Shooter · Violent

BioShock Infinite
Shared: Action · Shooter · Singleplayer

Call of Duty®
Shared: Shooter · Action · Singleplayer

Trepang2
Shared: Shooter · Action · Violent

People Playground
Shared: 2D · Violent · Gore

Bright Memory: Infinite
Shared: Action · Shooter · Indie

RAGE 2
Shared: Action · Post-apocalyptic · Shooter

The Ascent
Shared: Top-Down Shooter · Action · Shooter

Broforce
Shared: Action · 2D · Shooter

DOOM
Shared: Action · Shooter · Gore

CARRION
Shared: Action · Gore · 2D

Metro Exodus
Shared: Post-apocalyptic · Action · Shooter

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

Serious Sam 4
Shared: Action · Shooter · Gore

The Hong Kong Massacre
Shared: Action · Top-Down Shooter · Shooter

The Last Stand: Aftermath
Shared: Top-Down Shooter · Post-apocalyptic · Shooter

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

METRO 2033 Redux
Shared: Post-apocalyptic · Action · Shooter