Games like ProtectSeaWar
Games like ProtectSeaWar include Call to Arms - Gates of Hell: Ostfront, Men of War: Assault Squad 2, Hearts of Iron IV, Company of Heroes 2, and Total War: THREE KINGDOMS. We matched them by the tags players give ProtectSeaWar on Steam (Casual, Strategy, 3D Fighter, RTS, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Call to Arms - Gates of Hell: Ostfront
Shared: Strategy · RTS · Real Time Tactics

Men of War: Assault Squad 2
Shared: Strategy · RTS · World War II

Hearts of Iron IV
Shared: Strategy · World War II · RTS

Company of Heroes 2
Shared: Strategy · RTS · World War II

Total War: THREE KINGDOMS
Shared: Strategy · RTS · Historical

WARNO
Shared: Strategy · RTS · Real Time Tactics

Blitzkrieg 3
Shared: Strategy · RTS · Real Time Tactics

Sudden Strike 4
Shared: Strategy · RTS · Real Time Tactics

Steel Division 2
Shared: Strategy · RTS · World War II

Age of Empires III: Definitive Edition
Shared: Strategy · RTS · Military

Company of Heroes
Shared: Strategy · RTS · World War II

Company of Heroes 3
Shared: Strategy · RTS · Real Time Tactics

Door Kickers 2: Task Force North
Shared: Strategy · Real Time Tactics · Top-Down

Steel Division: Normandy 44
Shared: Strategy · RTS · World War II

Broken Arrow
Shared: Strategy · RTS · Real Time Tactics

Wargame: Red Dragon
Shared: Strategy · RTS · Real Time Tactics

Creeper World 4
Shared: RTS · Strategy · Real Time Tactics

Master of Command
Shared: Strategy · RTS · Real Time Tactics

Commandos: Origins
Shared: Strategy · RTS · Real Time Tactics

Bomber Crew
Shared: Strategy · World War II · Casual

Men of War: Assault Squad
Shared: Strategy · RTS · World War II

Total War: NAPOLEON – Definitive Edition
Shared: Strategy · RTS · Historical

Last Train Home
Shared: Strategy · RTS · Real Time Tactics

Ultimate Epic Battle Simulator 2
Shared: Strategy · RTS · Casual