Games like Synergy
Games like Synergy include Kingdoms and Castles, Frostpunk, Manor Lords, Banished, and Cities: Skylines. We matched them by the tags players give Synergy on Steam (Stylized, City Builder, Economy, Colony Sim, and Strategy): closest matches first, and among equally close ones the better-known games.
Kingdoms and Castles
Shared: City Builder · Colony Sim · Resource Management
Frostpunk
Shared: City Builder · Strategy · Resource Management
Manor Lords
Shared: City Builder · Strategy · Colony Sim
Banished
Shared: City Builder · Colony Sim · Strategy
Cities: Skylines
Shared: City Builder · Strategy · Economy
Prison Architect
Shared: Colony Sim · City Builder · Strategy
Foundation
Shared: City Builder · Strategy · Resource Management
Against the Storm
Shared: City Builder · Strategy · Colony Sim
Cities: Skylines II
Shared: City Builder · Economy · Building
Workers & Resources: Soviet Republic
Shared: City Builder · Strategy · Economy
Farthest Frontier
Shared: City Builder · Strategy · Resource Management
Empires of the Undergrowth
Shared: City Builder · Strategy · Colony Sim
Oxygen Not Included
Shared: Colony Sim · Resource Management · Building
Ostriv
Shared: City Builder · Strategy · Colony Sim
Norland
Shared: City Builder · Strategy · Colony Sim
Captain of Industry
Shared: Resource Management · Economy · Strategy
Dwarf Fortress
Shared: Colony Sim · City Builder · Strategy
Timberborn
Shared: City Builder · Colony Sim · Building
IXION
Shared: City Builder · Strategy · Colony Sim
Kingdoms Reborn
Shared: City Builder · Colony Sim · Strategy
Planet Zoo
Shared: City Builder · Economy · Building
Anno 1800
Shared: City Builder · Economy · Strategy
Pharaoh™: A New Era
Shared: City Builder · Colony Sim · Economy
Settlement Survival
Shared: City Builder · Colony Sim · Building