Games like Roombo: First Blood
Games like Roombo: First Blood include POSTAL 2, Hotline Miami, Party Hard, My Friend Pedro, and Hotline Miami 2: Wrong Number. We matched them by the tags players give Roombo: First Blood on Steam (Action, Violent, Stealth, Funny, and Dark Humor): closest matches first, and among equally close ones the better-known games.

POSTAL 2
Shared: Violent · Dark Humor · Funny

Hotline Miami
Shared: Violent · Action · Great Soundtrack

Party Hard
Shared: Stealth · Violent · Action

My Friend Pedro
Shared: Action · Violent · Gore

Hotline Miami 2: Wrong Number
Shared: Violent · Action · Great Soundtrack

Postal III
Shared: Action · Violent · Dark Humor

People Playground
Shared: Violent · Gore · Funny

DOOM Eternal
Shared: Action · Violent · Gore

Kindergarten
Shared: Funny · Violent · Dark Humor

Wolfenstein II: The New Colossus
Shared: Action · Violent · Singleplayer

Bully: Scholarship Edition
Shared: Action · Singleplayer · Funny

HITMAN World of Assassination
Shared: Stealth · Action · Violent

Bulletstorm: Full Clip Edition
Shared: Action · Violent · Gore

Party Hard 2
Shared: Violent · Action · Stealth

Devil May Cry 5
Shared: Action · Great Soundtrack · Violent

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

There's Poop In My Soup
Shared: Funny · Violent · Action

Paint the Town Red
Shared: Violent · Action · Gore

Manhunt
Shared: Violent · Stealth · Action

DOKA 2 KISHKI EDITION
Shared: Violent · Action · Dark Humor

Rogue Warrior
Shared: Action · Funny · Violent

High On Life
Shared: Dark Humor · Singleplayer · Action

Gunpoint
Shared: Stealth · Action · Singleplayer

South Park™: The Stick of Truth™
Shared: Funny · Action · Dark Humor