Games like Rule the Waves 3
Games like Rule the Waves 3 include UBOAT, Europa Universalis IV, Hearts of Iron IV, Sea Power : Naval Combat in the Missile Age, and Ultimate Admiral: Dreadnoughts. We matched them by the tags players give Rule the Waves 3 on Steam (Simulation, Wargame, Naval, Military, and Strategy): closest matches first, and among equally close ones the better-known games.

UBOAT
Shared: Simulation · Naval · Military

Europa Universalis IV
Shared: Simulation · Strategy · Wargame

Hearts of Iron IV
Shared: Strategy · Military · Simulation

Sea Power : Naval Combat in the Missile Age
Shared: Simulation · Naval Combat · Military

Ultimate Admiral: Dreadnoughts
Shared: Naval · Naval Combat · Wargame

War on the Sea
Shared: Simulation · Naval · Strategy

Wargame: Red Dragon
Shared: Wargame · Strategy · Military

Cold Waters
Shared: Simulation · Naval · Naval Combat

Age of History 3
Shared: Wargame · Strategy · Alternate History

WARNO
Shared: Wargame · Military · Strategy

Silent Hunter 5®: Battle of the Atlantic
Shared: Simulation · Naval · Naval Combat

Steel Division 2
Shared: Strategy · Military · Simulation

Wargame: European Escalation
Shared: Strategy · Military · Wargame

Atlantic Fleet
Shared: Simulation · Naval · Strategy

Silent Hunter® III
Shared: Simulation · Naval Combat · Naval

Game Dev Tycoon
Shared: Simulation · Strategy · Singleplayer

Sid Meier’s Civilization® VI
Shared: Strategy · Singleplayer · Simulation

Ultimate Admiral: Age of Sail
Shared: Simulation · Strategy · Naval

Wargame: Airland Battle
Shared: Strategy · Military · Wargame

Company of Heroes 3
Shared: Wargame · Strategy · Singleplayer

Victoria II
Shared: Strategy · Simulation · Military

Bomber Crew
Shared: Simulation · Strategy · Singleplayer

Victoria 3
Shared: Simulation · Strategy · Management

Darkest Hour: A Hearts of Iron Game
Shared: Strategy · Wargame · Simulation