Games like Oh...Sir!! The Insult Simulator
Games like Oh...Sir!! The Insult Simulator include Duck Game, Gang Beasts, Garry's Mod, Who's Your Daddy?!, and Goat Simulator. We matched them by the tags players give Oh...Sir!! The Insult Simulator on Steam (Comedy, Indie, Funny, Simulation, and Multiplayer): closest matches first, and among equally close ones the better-known games.

Duck Game
Shared: Funny · Multiplayer · Local Multiplayer

Gang Beasts
Shared: Funny · Multiplayer · Local Multiplayer

Garry's Mod
Shared: Multiplayer · Funny · Comedy

Who's Your Daddy?!
Shared: Funny · Comedy · Multiplayer

Goat Simulator
Shared: Comedy · Funny · Simulation

Undertale
Shared: Funny · Indie · Comedy

Stick Fight: The Game
Shared: Funny · Multiplayer · Local Multiplayer

Mount Your Friends
Shared: Comedy · Funny · Indie

There Is No Game: Wrong Dimension
Shared: Indie · Comedy · Funny

Game Dev Tycoon
Shared: Indie · Simulation · Singleplayer

Golf With Your Friends
Shared: Multiplayer · Indie · Funny

Plague Inc: Evolved
Shared: Indie · Simulation · Multiplayer

Granny Simulator
Shared: Funny · Multiplayer · Simulation

DELTARUNE
Shared: Funny · Comedy · Pixel Graphics

Two Point Hospital
Shared: Simulation · Funny · Indie

Stardew Valley
Shared: Multiplayer · Simulation · Pixel Graphics

Totally Accurate Battle Simulator
Shared: Funny · Simulation · Indie

Timberman
Shared: Indie · Multiplayer · Pixel Graphics

Plants vs. Zombies GOTY Edition
Shared: Comedy · Singleplayer · 2D

Peace, Death!
Shared: Indie · Funny · Simulation

The Escapists 2
Shared: Multiplayer · Pixel Graphics · 2D

BattleBlock Theater®
Shared: Comedy · Funny · Multiplayer

Pizza Tower
Shared: Indie · Funny · Comedy

Papers, Please
Shared: Indie · Simulation · Singleplayer