Games like Happy Room
Games like Happy Room include People Playground, Totally Accurate Battle Simulator, Garry's Mod, Ultimate Epic Battle Simulator, and Goat Simulator. We matched them by the tags players give Happy Room on Steam (Gore, Simulation, Violent, Action, and Sandbox): closest matches first, and among equally close ones the better-known games.
People Playground
Shared: Gore · Sandbox · Violent
Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Funny
Garry's Mod
Shared: Sandbox · Funny · Physics
Ultimate Epic Battle Simulator
Shared: Simulation · Sandbox · Action
Goat Simulator
Shared: Simulation · Funny · Sandbox
Paint the Town Red
Shared: Gore · Violent · Action
Happy Wheels
Shared: Gore · Sandbox · Violent
GoreBox
Shared: Gore · Violent · Sandbox
Beast Battle Simulator
Shared: Simulation · Sandbox · Gore
Blade and Sorcery
Shared: Gore · Sandbox · Action
Total Tank Simulator
Shared: Simulation · Action · Sandbox
Mutilate-a-Doll 2
Shared: Gore · Simulation · Sandbox
Gang Beasts
Shared: Action · Funny · Physics
Viscera Cleanup Detail
Shared: Gore · Simulation · Funny
Game Dev Tycoon
Shared: Simulation · Indie · Strategy
Viscera Cleanup Detail: Santa's Rampage
Shared: Gore · Simulation · Indie
Animal Revolt Battle Simulator
Shared: Simulation · Sandbox · Indie
My Friend Pedro
Shared: Gore · Action · Indie
Wobbly Life
Shared: Simulation · Sandbox · Funny
STANDBOX
Shared: Gore · Violent · Sandbox
Fun with Ragdolls: The Game
Shared: Simulation · Sandbox · Action
POSTAL 2
Shared: Violent · Funny · Sandbox
Guts and Glory
Shared: Gore · Action · Violent
Turbo Dismount™
Shared: Simulation · Funny · Action