Games like Green City
Games like Green City include Cities: Skylines, Cities: Skylines II, Foundation, Planet Zoo, and Prison Architect. We matched them by the tags players give Green City on Steam (Strategy, City Builder, Free to Play, Nature, and Sandbox): closest matches first, and among equally close ones the better-known games.

Cities: Skylines
Shared: City Builder · Strategy · Building

Cities: Skylines II
Shared: City Builder · Sandbox · Strategy

Foundation
Shared: City Builder · Strategy · Sandbox

Planet Zoo
Shared: City Builder · Sandbox · Nature

Prison Architect
Shared: Strategy · Sandbox · Building

Kingdoms and Castles
Shared: City Builder · Strategy · Sandbox

Manor Lords
Shared: Strategy · City Builder · Sandbox

Two Point Museum
Shared: Strategy · City Builder · Building

Banished
Shared: City Builder · Strategy · Sandbox

Planet Coaster
Shared: Strategy · Sandbox · Building

Jurassic World Evolution
Shared: Strategy · Building · City Builder

Let's School
Shared: City Builder · Strategy · Sandbox

Against the Storm
Shared: Strategy · City Builder · Building

Transport Fever 2
Shared: Strategy · City Builder · Sandbox

Timberborn
Shared: City Builder · Sandbox · Nature

Jurassic World Evolution 2
Shared: Strategy · Building · Sandbox

Factorio
Shared: Strategy · Sandbox · Resource Management

Planet Zoo 2
Shared: Strategy · City Builder · Sandbox

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

Tropico 6
Shared: Strategy · City Builder · Sandbox

Anno 1800
Shared: Strategy · City Builder · Sandbox

Mini Motorways
Shared: Strategy · Casual · Relaxing

Two Point Campus
Shared: Strategy · City Builder · Building

Town to City
Shared: City Builder · Strategy · Building