Games like Synergy - Supporter Pack
Games like Synergy - Supporter Pack include Frostpunk, IXION, Tropico 6, Anno 117: Pax Romana, and Cities: Skylines II. We matched them by the tags players give Synergy - Supporter Pack on Steam (Futuristic, Exploration, Choices Matter, Colorful, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Frostpunk
Shared: City Builder · Post-apocalyptic · Building

IXION
Shared: City Builder · Exploration · Choices Matter

Tropico 6
Shared: City Builder · Economy · Strategy

Anno 117: Pax Romana
Shared: City Builder · Exploration · Economy

Cities: Skylines II
Shared: City Builder · Building · Economy

Hollywood Animal
Shared: Choices Matter · Atmospheric · City Builder

Anno 1800
Shared: City Builder · Economy · Strategy

Anno 2070™
Shared: Futuristic · City Builder · Economy

Frostpunk 2
Shared: City Builder · Post-apocalyptic · Strategy

This War of Mine
Shared: Atmospheric · Choices Matter · Strategy

Foundation
Shared: City Builder · Atmospheric · Building

Cliff Empire
Shared: Futuristic · City Builder · Economy

Jurassic World Evolution
Shared: Building · City Builder · Economy

Kingdoms and Castles
Shared: City Builder · Building · Economy

Anno 2205™
Shared: Futuristic · City Builder · Economy

Airborne Kingdom
Shared: Exploration · City Builder · Building

Planet Coaster
Shared: Building · Simulation · Economy

Jurassic World Evolution 2
Shared: Building · City Builder · Economy

Settlement Survival
Shared: City Builder · Exploration · Building

Planet Coaster 2
Shared: City Builder · Building · Economy

Pharaoh™: A New Era
Shared: City Builder · Building · Economy

Surviving the Aftermath
Shared: City Builder · Post-apocalyptic · Strategy

Two Point Museum
Shared: City Builder · Building · Exploration

Endzone - A World Apart
Shared: City Builder · Post-apocalyptic · Strategy