Games like Penis Simulator
Games like Penis Simulator include Garry's Mod, GoreBox, How to Fish, Hot Dogs, Horseshoes & Hand Grenades, and Aimlabs. We matched them by the tags players give Penis Simulator on Steam (Action Roguelike, FPS, PvE, Physics, and Casual): closest matches first, and among equally close ones the better-known games.

Garry's Mod
Shared: Physics · Casual · FPS

GoreBox
Shared: FPS · Physics · PvE

How to Fish
Shared: Physics · Shooter · FPS

Hot Dogs, Horseshoes & Hand Grenades
Shared: FPS · Physics · Shooter

Aimlabs
Shared: FPS · Simulation · Shooter

Squad
Shared: FPS · PvE · Shooter

Bodycam
Shared: FPS · Shooter · Simulation

Deep Rock Galactic: Rogue Core
Shared: FPS · PvE · Action Roguelike

Ready or Not
Shared: FPS · Shooter · First-Person

OPERATOR
Shared: FPS · Shooter · PvE

Killing Floor 3
Shared: FPS · PvE · Shooter

Deadzone: Rogue
Shared: FPS · PvE · Shooter

Goat Simulator
Shared: Simulation · Physics · Casual

Deep Rock Galactic
Shared: PvE · FPS · Shooter

Warhammer 40,000: Darktide
Shared: FPS · PvE · Character Customization

The Sims™ 4
Shared: Life Sim · Simulation · Character Customization

Ravenfield
Shared: FPS · Shooter · First-Person

The Coin Game
Shared: Physics · Casual · Life Sim

R.E.P.O.
Shared: Physics · Horror · 3D

Arma Reforger
Shared: FPS · Simulation · Shooter

Gray Zone Warfare
Shared: FPS · Simulation · PvE

KovaaK's
Shared: FPS · Simulation · Shooter

PEAK
Shared: Physics · Action Roguelike · First-Person

Totally Accurate Battle Simulator
Shared: Simulation · Physics · Funny