Games like Z-Collapse
Games like Z-Collapse include Hearts of Iron IV, Total War: WARHAMMER, Age of History 3, SuperPower 3, and Europa Universalis IV. We matched them by the tags players give Z-Collapse on Steam (Simulation, Strategy, Grand Strategy, RTS, and Outbreak Sim): closest matches first, and among equally close ones the better-known games.

Hearts of Iron IV
Shared: Strategy · Grand Strategy · Simulation

Total War: WARHAMMER
Shared: Strategy · Simulation · Grand Strategy

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

SuperPower 3
Shared: Simulation · Strategy · Grand Strategy

Europa Universalis IV
Shared: Strategy · Grand Strategy · Simulation

Broken Arrow
Shared: Strategy · RTS · Wargame

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

Victoria II
Shared: Strategy · Grand Strategy · Simulation

Carrier Command 2
Shared: Simulation · Strategy · RTS

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

Total War: WARHAMMER III
Shared: Strategy · Grand Strategy · RTS

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

Power & Revolution 2022 Edition
Shared: Simulation · Strategy · Grand Strategy

Total War: WARHAMMER II
Shared: Strategy · RTS · Grand Strategy

WARNO
Shared: Strategy · Wargame · RTS

Kingdom Heroes 8
Shared: RTS · Strategy · Real Time Tactics

Crusader Kings II
Shared: Strategy · Grand Strategy · Simulation

Wargame: Red Dragon
Shared: Strategy · RTS · Wargame

Age of History II
Shared: Strategy · Grand Strategy · Simulation

Crusader Kings III
Shared: Strategy · Simulation · Grand Strategy

Geo-Political Simulator 5
Shared: Simulation · Strategy · Grand Strategy

Power & Revolution 2021 Edition
Shared: Simulation · Strategy · Grand Strategy

Men of War: Assault Squad 2
Shared: Strategy · Simulation · RTS

Victoria 3
Shared: Simulation · Strategy · Grand Strategy