Games like Ostalgie: The Berlin Wall
Games like Ostalgie: The Berlin Wall include Crisis in the Kremlin, Victoria 3, Age of History II, Crusader Kings II, and Crusader Kings III. We matched them by the tags players give Ostalgie: The Berlin Wall on Steam (Political Sim, Simulation, Strategy, Cold War, and Indie): closest matches first, and among equally close ones the better-known games.

Crisis in the Kremlin
Shared: Political Sim · Strategy · Simulation

Victoria 3
Shared: Simulation · Strategy · Political Sim

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

Crusader Kings II
Shared: Strategy · Political Sim · Simulation

Crusader Kings III
Shared: Strategy · Simulation · Historical

Democracy 4
Shared: Political Sim · Strategy · Simulation

China: Mao's legacy
Shared: Political Sim · Simulation · Strategy

Europa Universalis IV
Shared: Strategy · Simulation · Historical

Imperator: Rome
Shared: Strategy · Simulation · Political Sim

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

Victoria II
Shared: Strategy · Political Sim · Simulation

Crisis in the Kremlin: The Cold War
Shared: Simulation · Political Sim · Strategy

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

Beholder
Shared: Political Sim · Strategy · Choices Matter

Europa Universalis V
Shared: Strategy · Simulation · Historical

Democracy 3
Shared: Political Sim · Simulation · Strategy

Heroes' Vow: Three Kingdoms
Shared: Simulation · Strategy · RPG

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

Tropico 6
Shared: Simulation · Strategy · Political Sim

Manor Lords
Shared: Strategy · Simulation · Historical

Terra Invicta
Shared: Simulation · Strategy · Historical

Old World
Shared: Simulation · Strategy · Historical

911 Operator
Shared: Simulation · Strategy · Indie

Ages of Conflict: World War Simulator
Shared: Simulation · Political Sim · Alternate History