Games like Ultimate Admiral: Dreadnoughts
Games like Ultimate Admiral: Dreadnoughts include UBOAT, Hearts of Iron IV, War on the Sea, Age of History II, and Sprocket. We matched them by the tags players give Ultimate Admiral: Dreadnoughts on Steam (Naval Combat, Naval, World War I, World War II, and Grand Strategy): closest matches first, and among equally close ones the better-known games.

UBOAT
Shared: Naval Combat · World War II · Naval

Hearts of Iron IV
Shared: World War II · Grand Strategy · Military

War on the Sea
Shared: Naval · Naval Combat · World War II

Age of History II
Shared: Grand Strategy · Turn-Based Strategy · Historical

Sprocket
Shared: Building · World War II · Military

Age of History 3
Shared: Wargame · Grand Strategy · World War I

Europa Universalis IV
Shared: Grand Strategy · Wargame · Simulation

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

Heroes' Vow: Three Kingdoms
Shared: Grand Strategy · Simulation · Turn-Based Strategy

Darkest Hour: A Hearts of Iron Game
Shared: World War II · Grand Strategy · World War I

NavalArt
Shared: Naval Combat · Building · Wargame

Total War: THREE KINGDOMS
Shared: Grand Strategy · Turn-Based Strategy · Military

Total War: EMPIRE – Definitive Edition
Shared: Grand Strategy · Military · Turn-Based Strategy

Victoria II
Shared: Grand Strategy · World War I · Military

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

Silent Hunter® III
Shared: Naval Combat · Naval · World War II

Sid Meier’s Civilization® VI
Shared: Grand Strategy · Turn-Based Strategy · Strategy

Hearts of Iron III
Shared: Grand Strategy · World War II · Military

Cold Waters
Shared: Naval Combat · Naval · Simulation

Holdfast: Nations At War
Shared: World War I · Wargame · Military

Total War: NAPOLEON – Definitive Edition
Shared: Grand Strategy · Turn-Based Strategy · Historical

Silent Hunter 5®: Battle of the Atlantic
Shared: Naval Combat · Naval · World War II

Ultimate General: Civil War
Shared: Wargame · Grand Strategy · War

Rule the Waves 3
Shared: Naval · Naval Combat · Wargame