Cities: Skylines

Cities: Skylines

329 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 (9)
Mar 18 @ 4:49pm
Sep 9, 2016 @ 9:59pm
Help Please
Apr 10, 2016 @ 9:33pm
I can not load my .osm
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Nodoka "Nikki" Hanamura Apr 21 @ 8:59pm 
I'm getting broken roads upon exporting to a .osm file.
Rob Constructor Apr 13 @ 7:39am 
What do I have to do if I ONLY want the Streets imported and no heightmap ? Is this even possible ?
drink Mar 18 @ 4:48pm 
Always crashes when importing from
pachodomi Jan 17 @ 11:18pm 
Guys check DISCUSSIONS if not able to make it work!!
juanjose Jan 2 @ 12:28pm 
Can import terrain but haven't been able to import roads.
dboy31 Dec 24, 2016 @ 2:07am 
it keeps crashing after i type the coordinates it crashed the game
Zero_lee Dec 15, 2016 @ 8:57am 
cannot find osm file , what should I do
rmjohnson144 Dec 13, 2016 @ 3:48pm 
okay, I made a map a few months ago. It wasn't quite finished, but I saved it. Now I can't find it after reinstalling to a new machine. Where is the saved map on my old machine?
Velomo Dec 12, 2016 @ 4:23am 
Mod doesnt work with latest patch. It crashes the game
rmjohnson144 Dec 11, 2016 @ 1:00pm 
CSL locks up when importing from terrain party. I tried subscribing to the OSM Import, but not sure it works with

ooops! The game crashed. The crash report folder named "2016-12-11_125104" next to the game executable. It would be great if you'd send it to the developer of the game.

I'll send it to CO next.