Games like Arms Race 2
Games like Arms Race 2 include Victoria 3, Hearts of Iron IV, Europa Universalis IV, Victoria II, and Sid Meier's Civilization VII. We matched them by the tags players give Arms Race 2 on Steam (Strategy, Grand Strategy, Political Sim, Text-Based, and Alternate History): closest matches first, and among equally close ones the better-known games.

Victoria 3
Shared: Strategy · Grand Strategy · Political Sim

Hearts of Iron IV
Shared: Strategy · Grand Strategy · Alternate History

Europa Universalis IV
Shared: Strategy · Grand Strategy · Alternate History

Victoria II
Shared: Strategy · Grand Strategy · Political Sim

Sid Meier's Civilization VII
Shared: Strategy · Grand Strategy · Historical

Age of History II
Shared: Strategy · Grand Strategy · Political Sim

Imperator: Rome
Shared: Strategy · Grand Strategy · Political Sim

Europa Universalis V
Shared: Strategy · Grand Strategy · Economy

Crusader Kings II
Shared: Strategy · Grand Strategy · Political Sim

Terra Invicta
Shared: Strategy · Grand Strategy · Economy

Rebel Inc: Escalation
Shared: Strategy · Grand Strategy · Economy

Democracy 4
Shared: Strategy · Political Sim · Grand Strategy

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

Sid Meier’s Civilization® VI
Shared: Strategy · Grand Strategy · Historical

Crusader Kings III
Shared: Strategy · Grand Strategy · Historical

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

Dummynation
Shared: Grand Strategy · Strategy · Diplomacy

Manor Lords
Shared: Strategy · Grand Strategy · Historical

Millennia
Shared: Strategy · Grand Strategy · Alternate History

Old World
Shared: Strategy · Grand Strategy · Historical

Battle Brothers
Shared: Strategy · Grand Strategy · Tactical

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

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

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