Games like Golden Age
Games like Golden Age include Manor Lords, Sid Meier's Civilization VII, Against the Storm, Europa Universalis IV, and Workers & Resources: Soviet Republic. We matched them by the tags players give Golden Age on Steam (Strategy, City Builder, 4X, Tower Defense, and Base Building): closest matches first, and among equally close ones the better-known games.

Manor Lords
Shared: Strategy · City Builder · Base Building

Sid Meier's Civilization VII
Shared: Strategy · City Builder · 4X

Against the Storm
Shared: Strategy · City Builder · Base Building

Europa Universalis IV
Shared: Strategy · 4X · Grand Strategy

Workers & Resources: Soviet Republic
Shared: Strategy · City Builder · Base Building

Sid Meier’s Civilization® VI
Shared: Strategy · 4X · City Builder

Thronefall
Shared: Strategy · City Builder · Tower Defense

Age of Empires III: Definitive Edition
Shared: Strategy · Base Building · City Builder

They Are Billions
Shared: Strategy · Base Building · City Builder

Empires of the Undergrowth
Shared: Strategy · City Builder · Base Building

Total War: WARHAMMER
Shared: Strategy · 4X · Simulation

Kingdom Two Crowns
Shared: City Builder · Tower Defense · Strategy

Songs of Syx
Shared: City Builder · Strategy · 4X

Kingdoms and Castles
Shared: City Builder · Strategy · Simulation

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

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

Norland
Shared: Strategy · City Builder · Base Building

Farthest Frontier
Shared: City Builder · Strategy · 4X

Infection Free Zone
Shared: City Builder · Strategy · Base Building

Creeper World 4
Shared: Tower Defense · Strategy · Wargame

Stronghold Crusader: Definitive Edition
Shared: Strategy · City Builder · Tower Defense

HUMANKIND™
Shared: Strategy · 4X · City Builder

Becastled
Shared: Strategy · City Builder · Base Building

Total War: ROME REMASTERED
Shared: Strategy · 4X · Grand Strategy