Games like Tooth N' Fin
Games like Tooth N' Fin include Slime Rancher, DAVE THE DIVER, The Long Dark, Feed and Grow: Fish, and American Truck Simulator. We matched them by the tags players give Tooth N' Fin on Steam (Casual, Simulation, Exploration, Immersive Sim, and Open World): closest matches first, and among equally close ones the better-known games.

Slime Rancher
Shared: Exploration · Open World · Singleplayer

DAVE THE DIVER
Shared: Casual · Exploration · Adventure

The Long Dark
Shared: Exploration · Open World · Singleplayer

Feed and Grow: Fish
Shared: Simulation · Open World · Early Access

American Truck Simulator
Shared: Simulation · Open World · Exploration

Ancestors: The Humankind Odyssey
Shared: Exploration · Open World · Simulation

Euro Truck Simulator 2
Shared: Simulation · Open World · Exploration

The Long Drive
Shared: Open World · Exploration · Simulation

Subnautica: Below Zero
Shared: Open World · Singleplayer · Exploration

DREDGE
Shared: Exploration · Open World · Adventure

My Time at Portia
Shared: Open World · Simulation · Casual

Subnautica
Shared: Exploration · Open World · Singleplayer

Rise of the Tomb Raider™
Shared: Adventure · Singleplayer · Exploration

Sailwind
Shared: Simulation · Open World · Immersive Sim

No Man's Sky
Shared: Open World · Exploration · Adventure

Fallout 4
Shared: Open World · Exploration · Singleplayer

Goat Simulator
Shared: Simulation · Open World · Casual

The Forest
Shared: Open World · Adventure · Exploration

Internet Cafe Simulator 2
Shared: Simulation · Exploration · Immersive Sim

Streamer Life Simulator
Shared: Simulation · Casual · Singleplayer

Hello Kitty Island Adventure
Shared: Simulation · Open World · Casual

Forza Horizon 5
Shared: Open World · Simulation · Exploration

Crimson Desert Enhanced
Shared: Open World · Exploration · Singleplayer

Don't Starve
Shared: Adventure · Singleplayer · Indie