Cities Skylines Maps Guide — Every Map, the Editor & Custom Maps

Cities Skylines maps explained: the base maps in CS1 and CS2, the map editor, the Steam Workshop custom maps (including the famous Boston map), and how to use custom maps.

Last Updated: August 11, 2026

Cities Skylines Maps Guide — Every Map, the Editor & Custom Maps

The short version: Cities Skylines ships with ~10 built-in maps (CS1 and CS2 each), but the map editor + Steam Workshop are where the real map library lives — tens of thousands of custom maps, including the famous Boston map (a meticulous real-city recreation). Custom maps install in one click via the Workshop.

This guide covers built-in maps, the editor, and custom maps.

Built-in Maps

  • CS1: Ships with ~10 maps (Green Hills, Diamond Coast, Grand River, etc.) across different climates/tiles.
  • CS2: Ships with ~10 base maps (River Delta, Twin Mountain, Barrier Island, etc.) with the game's new climate/terrain systems.
  • Map tiles: Both games let you unlock additional buildable tiles as the city grows (the starting tile + expansions).
The fastest answer

The built-in maps are fine starting points, but the Workshop is the real map source — thousands of community maps for free, one-click install.

The Map Editor

  • CS1: A full terrain editor (paint terrain, water, resources, roads) — the tool that created the massive custom-map library.
  • CS2: The editor was reworked; map creation is more involved (the community built tools around the new editor). The Workshop supports CS2 maps.
  • How it works: Build a terrain → save as a map → publish to the Workshop (or use locally).

Custom Maps (Steam Workshop)

Cities Skylines map
Cities Skylines map

  • Installing: Subscribe on the Workshop → the map appears in the New Game map list. One click.
  • The famous ones: The Boston recreation (a meticulous real-city map, among the most-subscribed CS maps), plus recreations of other real cities and fictional masterpieces.
  • Why they matter: "Cities skylines map" searches usually lead to the Workshop — real-city maps and challenge maps are the community's pride.

The Best Map Types

Type Best for
Flat/beginner Learning the game (minimal terrain challenges)
Real-city recreations Fans of specific cities (Boston, etc.)
Challenge maps Hard terrain/limited resources for veterans
Modded/asset maps Maps designed around specific asset packs

Frequently Asked Questions

How many maps does Cities Skylines have?

~10 built-in maps per game (CS1 and CS2), plus tens of thousands of Workshop custom maps.

How do I use custom maps in Cities Skylines?

Subscribe on the Steam Workshop — the map appears in New Game's map list. No manual install needed.

Is there a Boston map in Cities Skylines?

Yes — the Boston recreation is one of the most-subscribed custom maps on the Workshop.

What is the Cities Skylines map editor?

A terrain-building tool (in CS1 full-featured; reworked in CS2) for creating custom maps, publishable to the Workshop.

What are the best Cities Skylines maps?

For beginners: flat maps. For fans: real-city recreations (Boston and others). For veterans: challenge maps.

Can I use CS1 maps in CS2?

No — CS1 and CS2 use different map formats; Workshop content is game-specific.