Cities: Skylines

Cities: Skylines

366 ratings
File Size
0.449 MB
Apr 7, 2015 @ 5:15pm
May 19, 2015 @ 10:07am
15 Change Notes ( view )

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Import roads from real world road maps. Export your cities and view them with road map viewers.

Instructions to Import
  1. Go to[] and download heightmap (18km is 1:1 scale). Open the readme and copy the coordinates.

  2. Start a new game with the map, there should be a new road button on the right of the toolbar. Paste your coordinates into the coordinates box.

  3. Click on Load From and wait for the file to download and load.

  4. Clean up the terrain, smoothen out the spikey bits. Then click on the "Load From" button.

  5. It'll lag awhile while it downloads the file (If you're choosing a big area or your internet is slow it's highly recommended to download the file from OpenStreetMap first and use the Load OSM from file option instead!) After it's done loading click on "Make Roads" and it should start drawing the roads.

Or you can load the map data from disk. The path is the location of your OSM file (by default you should just need to move the map file into your documents folder). You can export the file from Click "Load OSM From File".

The scale is based on real world scale, not the bounding box, adjust this if your heightmap is on a different scale. (Not working correctly!) The tolerance is the amount the mod will remove extra points to simplify the data. The Curve Tolerence is the leeway the mod uses in fitting curves to the map points. The tiles to boundary is the maximum number of game tiles from the middle the mod will draw on. There is a 32767 limit on the number of road segments. There is also a limit on the number of "zone blocks" in the game, so this can be the cause of the "too many objects" error as well. I would recommend something like the Better Bulldozer mod to clear some sections if you're hitting the limit.

Export to .osm
Click the export to osm button to export your city into an osm map. You can view this on any of the offline osm viewers like Java OpenStreetMapEditor. The file will be in your main city skylines folder and named after your city. More detailed instructions here.

Known issues
Scale isn't working correctly. If you have any other issues please tell me which coordinates you used!

If you like my mods you can further support me by checking out my own game currently currently on Steam Greenlight, thanks!


© OpenStreetMap contributors
Popular Discussions View All (11)
Jan 25 @ 5:28pm
Mar 6 @ 7:53am
[HELP] "System.OverflowException: Value Too Large Or Too Small" Error. Any fixes?
Sep 9, 2016 @ 9:59pm
Help Please
< >
Lademirion Casedy Sep 17, 2017 @ 2:21pm 
So it sorta works for me, it just doesn't want to show my entire map, but it crops to a really small area in the down right location. How do I fix this?
Mashiro Shiina Sep 5, 2017 @ 2:51am 
my name jeff
spotme_2 Aug 6, 2017 @ 3:25am 


When i'm opening this, i'm just getting this error:
The data included in this document is from . The data is made available under ODbL.

Does anyone know a workaround? or someone that can fix the page"

Simply use a different browser than the Steam browser, then open ;o)
Erke Aug 2, 2017 @ 10:35pm 
Does anybody know any alternative to this mod?
BeantownFan73 Jul 6, 2017 @ 6:39pm 
Ok so i got it to work and here is how i did it.

1 - Go to
2 - At the top of the page click EXPORT; a tool box will open on the left side
3 - Below the coordinates box is a blue link "manually select a different area" that
4 - A white box will appear on the map. Drag the corners to change the size of the box; in the top left of that white box is a little box with black and drag that to move the entire box to the area of the map you want
5 - Click the blue export button; a map file named map.osm will download
6 - Put that file in your documents folder
7 - Start the game--->Editor--->Maps--->New
8 - Click on the Cimtographer button on the far right
9 - Make sure the directory is set to your documents folder or it won't work.
10 - Click "Load OSM From File"; somewhere below that it will say file is loaded
11 - Click "Make Roads" and bam...roads will create.
gbkisses Jun 29, 2017 @ 10:57am 
This seems not to be working anymore. It's a FKN SHAME. This game looks dead without that.
BeantownFan73 Jun 22, 2017 @ 5:35am 
Two versions of this damn thing and neither work. When the hell they gonna update!? Jeez...
marqes May 28, 2017 @ 3:58pm 
Always crashes when importing from
Igxx May 22, 2017 @ 8:26am

When i'm opening this, i'm just getting this error:
The data included in this document is from . The data is made available under ODbL.

Does anyone know a workaround? or someone that can fix the page
Funøvitz爱-SYGU May 22, 2017 @ 2:37am 
i tried several times, but found that the games crashed when i a, trying to import the terrain by the coordinates