Cities: Skylines

Cities: Skylines

378 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)
Jul 7 @ 9:50pm
Mar 6 @ 7:53am
[HELP] "System.OverflowException: Value Too Large Or Too Small" Error. Any fixes?
Sep 9, 2016 @ 9:59pm
Help Please
< >
Sareus Jul 9 @ 12:10am 
"Invalid IL code in Mapper.RoadMaker2/<MakeRoad>d__5:MoveNext (): IL_0223: stfld 0x040000c0


No details"

Candamir Jul 8 @ 1:09am 
all Open Street Mods with the same Error =/

Invalid IL code in Mapper.RoadMaker2/<MakeRoad>d__5:MoveNext (): IL_0223: stfld 0x040000c0


No details
Anyone else getting this when trying to import roads -
Invalid IL code in Mapper.RoadMaker2/<MakeRoad>d__5:MoveNext (): IL_0223: stfld 0x040000c0


No details
IPood Jun 6 @ 1:07pm 
GilbertRoy id say no... hasnt been updated since 2015
GilbertRoyAlva Jun 3 @ 5:15am 
has this mod been updated for Parklife expansion?
3DMightyMouse May 26 @ 12:16pm 
When trying to export from OSM it says This site can’t be reached
The webpage at ... might be temporarily down or it may have moved permanently to a new web address.
Hars Apr 11 @ 6:08pm 
It dosn't work on Fedora 27. Neither file import, nor coordinates from terrain party, or Openstreetmap. Tried @BeantownFan73 suggestions, but same result.

Every line just ends with <filename unkown>:0
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?
Yui Hirasawa 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)