# A few questions about modding new locations

**URL:** <https://discourse.cataclysmdda.org/t/a-few-questions-about-modding-new-locations/14729>\
**Category:** The Toolbox\
**Created:** [December 31, 2017, 7:21pm UTC](https://discourse.cataclysmdda.org/t/a-few-questions-about-modding-new-locations/14729 "2017-12-31T19:21:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![harison86](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.cataclysmdda.org/harison86/32/10005_2.png) [@harison86](https://discourse.cataclysmdda.org/u/harison86)\
**Post date:** [December 31, 2017, 7:21pm UTC](https://discourse.cataclysmdda.org/t/a-few-questions-about-modding-new-locations/14729/1 "2017-12-31T19:21:34Z")

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1. Trying to add new locations in a mod, is there a reference of some sort for all of the possible colors for overmap tiles?

2. What does the `"SIDEWALK"` flag do for `"overmap_terrain"` types in the jsons?

3. What does `"extras" : "build"` do for `"overmap_terrain"` types?

4. Is it possible to have artifacts spawn in json locations?

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**Author:** ![BorkBorkGoesTheCode](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.cataclysmdda.org/borkborkgoesthecode/32/2343_2.png) [@BorkBorkGoesTheCode](https://discourse.cataclysmdda.org/u/BorkBorkGoesTheCode)\
**Post date:** [December 31, 2017, 9:11pm UTC](https://discourse.cataclysmdda.org/t/a-few-questions-about-modding-new-locations/14729/2 "2017-12-31T21:11:30Z")

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1. I don’t know.

2. SIDEWALK spawns a bunch of sidewalk tiles at any connection point between a map and road.

3. “extras” tells the game how to spawn things like minefields, drug deal remains etc… If you set “extras”: to “field” on a building map, extras might override parts of the map, creating things like weird minefields inside buildings. See homeimprovement\_superstore for an example.

4. I think a few maps in chaosvolt’s Arcana mod have artifacts in them. Nope. If you’re okay with non-random homemade artifacts, you can make you’re own using the same method Random\_Dragon is using in Arcana.