Games like Shark Simulator
Games like Shark Simulator include Garry's Mod, Goat Simulator, Gang Beasts, Wobbly Life, and People Playground. We matched them by the tags players give Shark Simulator on Steam (Simulation, Action, Indie, Casual, and Funny): closest matches first, and among equally close ones the better-known games.

Garry's Mod
Shared: Sandbox · Multiplayer · Funny

Goat Simulator
Shared: Simulation · Funny · Casual

Gang Beasts
Shared: Action · Funny · Multiplayer

Wobbly Life
Shared: Simulation · Multiplayer · Action

People Playground
Shared: Sandbox · Simulation · Gore

Totally Accurate Battle Simulator
Shared: Simulation · Funny · Sandbox

House Flipper
Shared: Simulation · Multiplayer · Casual

One-armed robber
Shared: Action · Simulation · Free to Play

Happy Room
Shared: Simulation · Action · Indie

Banana
Shared: Free to Play · Casual · Simulation

VRChat
Shared: Free to Play · Multiplayer · Funny

Golf With Your Friends
Shared: Casual · Multiplayer · Indie

Feed and Grow: Fish
Shared: Simulation · Action · Multiplayer

Viscera Cleanup Detail: Santa's Rampage
Shared: Simulation · Indie · Funny

Iron Snout
Shared: Action · Free to Play · Funny

Viscera Cleanup Detail: Shadow Warrior
Shared: Simulation · Indie · Action

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

The Sims™ 4
Shared: Simulation · Free to Play · Casual

Blood and Bacon
Shared: Action · Funny · Multiplayer

War Thunder
Shared: Action · Simulation · Free to Play

Viscera Cleanup Detail
Shared: Simulation · Multiplayer · Indie

Two Point Hospital
Shared: Simulation · Funny · Indie

Bad Guys at School
Shared: Simulation · Casual · Indie

Golf It!
Shared: Casual · Multiplayer · Simulation