Games like Aggression: Europe Under Fire
Games like Aggression: Europe Under Fire include Age of Empires II (Retired), Total War: THREE KINGDOMS, Company of Heroes 2, The Great War: Western Front™, and Hearts of Iron IV. We matched them by the tags players give Aggression: Europe Under Fire on Steam (Strategy, RTS, World War I, and Historical): closest matches first, and among equally close ones the better-known games.

Age of Empires II (Retired)
Shared: Strategy · RTS · Historical

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

Company of Heroes 2
Shared: Strategy · RTS · Historical

The Great War: Western Front™
Shared: Strategy · RTS · World War I

Hearts of Iron IV
Shared: Strategy · Historical · RTS

Total War: ROME II - Emperor Edition
Shared: Strategy · Historical · RTS

Last Train Home
Shared: Strategy · RTS · Historical

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

Total War: ATTILA
Shared: Strategy · Historical · RTS

Victoria II
Shared: Strategy · Historical · World War I

Call to Arms - Gates of Hell: Ostfront
Shared: Strategy · RTS · Historical

Battle of Empires : 1914-1918
Shared: Strategy · World War I · RTS

A Total War Saga: THRONES OF BRITANNIA
Shared: Strategy · RTS · Historical

Total War: MEDIEVAL II – Definitive Edition
Shared: Strategy · Historical · RTS

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

Rise of Nations: Extended Edition
Shared: Strategy · RTS · Historical

Cossacks 3
Shared: Strategy · RTS · Historical

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

Age of Empires: Definitive Edition
Shared: Strategy · RTS · Historical

Iron Harvest
Shared: Strategy · RTS · World War I

Crusader Kings III
Shared: Strategy · Historical · RTS

Age of History 3
Shared: Strategy · RTS · World War I

Age of History II
Shared: Strategy · Historical · World War I

Age of Mythology: Extended Edition
Shared: Strategy · RTS · Historical