Single-player games like Rule the Waves 3
Below are 9 single-player Steam games similar to Rule the Waves 3, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Rule the Waves 3 page.
Ranked picks
- 1

Ultimate Admiral: Dreadnoughts
Single-player alternative to Rule the Waves 3 — playable solo, no multiplayer required. Shares Strategy and Simulation with Rule the Waves 3.
Design warships the way you want them, command fleets, win the naval arms race for your nation!
- 2

Battleships and Carriers 2: 1940-1945
Single-player alternative to Rule the Waves 3 — playable solo, no multiplayer required. Shares Strategy and Simulation with Rule the Waves 3.
Casual WW2 naval turn-based strategy: attack/defend, search & destroy, build ships, subs and aircraft. Clear & simple combat and move. Fast, re-playable board game style strategy, with 70 unit types. More than 40 missions, death-matches & campaigns (Destroy, Conquer, Defend, Escort, Kill-Them-All).
- 3

Darkest Hour: A Hearts of Iron Game
Single-player alternative to Rule the Waves 3 — playable solo, no multiplayer required. Shares Strategy with Rule the Waves 3.
Developed by a team of experienced modders from the Paradox forum, Darkest Hour is a stand-alone Hearts of Iron game. The game features a mixture of short and in-depth campaigns set across the darkest chapters of the 20th century. Play from the outbreak of the Great War up until the onset of the Cold War.
- 4

Great Naval Battles: The Final Fury
Single-player alternative to Rule the Waves 3 — playable solo, no multiplayer required. Shares Strategy and Simulation with Rule the Waves 3.
Battlestations! All hands prepare for the naval conflict on a truly grand scale! GREAT NAVAL BATTLES: THE FINAL FURY is loaded with enough historical and hypothetical naval conflict to keep players - from casual to connoisseur - busy for hours and hours!
- 5

War on the Sea
Single-player alternative to Rule the Waves 3 — playable solo, no multiplayer required. Shares Strategy and Simulation with Rule the Waves 3.
Command ships, submarines and aircraft in the South Pacific during WWII.
- 6

NavalArt
Single-player alternative to Rule the Waves 3 — playable solo, no multiplayer required. Shares Strategy and Simulation with Rule the Waves 3.
Design your own warships, equip them with a variety of armament, and bring them out to the ocean!
- 7

Battle Fleet 2
Single-player alternative to Rule the Waves 3 — playable solo, no multiplayer required. Shares Strategy and Simulation with Rule the Waves 3.
Welcome Admiral! Select your fleet, assign weapons, and sink the enemy fleet by controlling each of your ships down to setting the aim and range of each weapon's shot. Features include full open world Pacific & Atlantic campaigns, cross-platform multiplayer and awesome turn-based naval battles.
- 8

Boat Crew
Single-player alternative to Rule the Waves 3 — playable solo, no multiplayer required. Shares Strategy and Simulation with Rule the Waves 3.
Command your crew in Boat Crew, a gripping action-strategy experience amidst the Pacific War. Take charge of a PT boat against Imperial Japan, skillfully managing resources and personnel by any means necessary to ensure victory in this high-stakes conflict.
- 9

Tactical Warfare Simulator
Single-player alternative to Rule the Waves 3 — playable solo, no multiplayer required. Shares Simulation with Rule the Waves 3.
Experience Adrenalin fueled dogfights over the western front.