Games like Forts - High Seas
Games like Forts - High Seas include People Playground, Forts, Garry's Mod, Teardown, and Mount & Blade: Warband. We matched them by the tags players give Forts - High Seas on Steam (Strategy, Action, Sandbox, Moddable, and Physics): closest matches first, and among equally close ones the better-known games.

People Playground
Shared: Sandbox · Physics · Moddable

Forts
Shared: Strategy · Physics · Destruction

Garry's Mod
Shared: Sandbox · Moddable · Physics

Teardown
Shared: Sandbox · Physics · Destruction

Mount & Blade: Warband
Shared: Strategy · Sandbox · Action

BeamNG.drive
Shared: Physics · Sandbox · Destruction

Besiege
Shared: Sandbox · Physics · Destruction

Mount & Blade II: Bannerlord
Shared: Strategy · Sandbox · Action

Totally Accurate Battle Simulator
Shared: Sandbox · Strategy · Physics

Just Cause™ 3
Shared: Action · Destruction · Sandbox

Ancient Warfare 3
Shared: Sandbox · Action · Strategy

Blade and Sorcery
Shared: Moddable · Sandbox · Action

Cortex Command
Shared: Strategy · Action · Sandbox

Just Cause 2
Shared: Action · Sandbox · Destruction

Brick Rigs
Shared: Sandbox · Destruction · Physics

Animal Revolt Battle Simulator
Shared: Sandbox · Strategy · Physics

Just Cause 4 Reloaded
Shared: Action · Sandbox · Destruction

Hot Dogs, Horseshoes & Hand Grenades
Shared: Sandbox · Physics · Moddable

Total Tank Simulator
Shared: Strategy · Action · Sandbox

Space Engineers 2
Shared: Sandbox · Physics · Moddable

CarX Drift Racing Online
Shared: Moddable · Sandbox · Physics

We Who Are About To Die
Shared: Action · Strategy · Physics

RimWorld
Shared: Strategy · Sandbox · Moddable

Grand Theft Auto IV: The Complete Edition
Shared: Action · Moddable · Sandbox