Games like Big Bang West
Games like Big Bang West include Age of Empires II (Retired), Plants vs. Zombies GOTY Edition, Manor Lords, They Are Billions, and Age of Empires III: Definitive Edition. We matched them by the tags players give Big Bang West on Steam (Casual, RPG, City Builder, RTS, and Tower Defense): closest matches first, and among equally close ones the better-known games.

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

Plants vs. Zombies GOTY Edition
Shared: Casual · Tower Defense · Strategy

Manor Lords
Shared: City Builder · Strategy · Historical

They Are Billions
Shared: RTS · City Builder · Tower Defense

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

Bloons TD 6
Shared: Tower Defense · Casual · Strategy

Lessaria: Fantasy Kingdom Sim
Shared: City Builder · RTS · RPG

Cities: Skylines
Shared: City Builder · Strategy · Management

The King is Watching
Shared: RTS · Tower Defense · City Builder

Farthest Frontier
Shared: City Builder · Strategy · Historical

Stronghold: Definitive Edition
Shared: City Builder · RTS · Strategy

Mindustry
Shared: Tower Defense · RTS · Strategy

Anno 1800
Shared: City Builder · RTS · Strategy

Game Dev Tycoon
Shared: Casual · Management · Strategy

Going Medieval
Shared: City Builder · Strategy · RTS

Crusader Kings III
Shared: RPG · Strategy · Historical

Workers & Resources: Soviet Republic
Shared: City Builder · Strategy · Historical

Oriental Dynasty - Silk Road defense war
Shared: Casual · Tower Defense · 2D

Kingdom Rush - Tower Defense
Shared: Tower Defense · Casual · 2D

Kingdoms and Castles
Shared: City Builder · Management · Strategy

Touhou Mystia's Izakaya
Shared: Casual · RPG · Time Management

Infection Free Zone
Shared: City Builder · RTS · Strategy

Age of Empires: Definitive Edition
Shared: RTS · City Builder · Strategy

Norland
Shared: City Builder · Strategy · RPG