Games like Fish Hero
Games like Fish Hero include PEAK, Red Dead Redemption 2, Ready or Not, Grand Theft Auto V Legacy, and Escape the Backrooms. We matched them by the tags players give Fish Hero on Steam (Psychological Horror, Multiplayer, Singleplayer, Realistic, and Action): closest matches first, and among equally close ones the better-known games.

PEAK
Shared: Multiplayer · Physics · Adventure

Red Dead Redemption 2
Shared: Multiplayer · Action · Realistic

Ready or Not
Shared: Realistic · Multiplayer · Singleplayer

Grand Theft Auto V Legacy
Shared: Multiplayer · Action · Singleplayer

Escape the Backrooms
Shared: Multiplayer · Psychological Horror · Singleplayer

Warhammer 40,000: Space Marine 2
Shared: Multiplayer · Action · Singleplayer

Getting Over It with Bennett Foddy
Shared: Psychological Horror · Singleplayer · Physics

Monster Hunter: World
Shared: Multiplayer · Action · Third Person

RV There Yet?
Shared: Multiplayer · Physics · Adventure

Just Cause™ 3
Shared: Multiplayer · Action · Singleplayer

Garry's Mod
Shared: Multiplayer · Physics · Singleplayer

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

Grand Theft Auto IV: The Complete Edition
Shared: Multiplayer · Action · Singleplayer

Tomb Raider Game of the Year
Shared: Action · Singleplayer · Multiplayer

A Difficult Game About Climbing
Shared: Psychological Horror · Singleplayer · Action

Gang Beasts
Shared: Multiplayer · Action · Physics

How to Fish
Shared: Multiplayer · Physics · Online Co-Op

Backrooms: Escape Together
Shared: Multiplayer · Psychological Horror · Realistic

Call of Duty®
Shared: Multiplayer · Singleplayer · Action

Pogostuck: Rage With Your Friends
Shared: Psychological Horror · Multiplayer · Action

Need for Speed™ Heat
Shared: Multiplayer · Singleplayer · Action

ELDEN RING NIGHTREIGN
Shared: Multiplayer · Singleplayer · Action

Monster Hunter Wilds
Shared: Multiplayer · Action · Third Person

HELLDIVERS™ 2
Shared: Multiplayer · Action · Online Co-Op