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Editorial Team
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Asked: 2026-05-15T08:07:21+00:00

Are there any services available that allow me to manipulate maps in an offline

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Are there any services available that allow me to manipulate maps in an offline setting? I am working on a project that requires me to take a map and based on features on the map, generate a game world. I have looked at a few of the API’s for different providers: Google, ms, etc. The API’s I looked seem to be strictly showing a user a map. I am looking for something that allows me to create a derivative of a map (the Gameworld), that will never be seen by the public, and is only used by the game engine. However one caveat is that I would like to be able to link the derivative created for use by the game engine, with something I can show the user.

As an example. Think of a cross country racing sim. Users cannot control the vehicles directly in this game, they can only control the cars setup, driver, etc. I create a gameworld from a map. The gameworld data (driver position, etc) is overlayed onto a real map. A race might last several days. The only interaction users have with the real map is viewing their position on the map, and where they are in relation to the others.

I don’t want to violate the terms of the API here. I read Googles API TOS, and it seems to me that creating the gameworld would violdate their TOS.

The features I really need are the following

  • The ability to locate a specific
    place on the map by lat/long
  • The ability/rights to grab those maps
    and save them as an image file
    temporarily for processing
  • The ability/rights to store a
    gameworld that is based on the real
    map
  • The ability to show a user a map with
    an overlay (this is optional. I can use googles API, or any other one that supports lat/long.)

Edit:
The gameworld creation will only happen once intially, and partial updates may occur very infrequently. I will only need to generate the world in the beginning.
This is also for a free game, so I am looking for something opensource

Edit:
I only need maps of the US. I need maps that contain rivers and lakes.

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1 Answer

  1. Editorial Team

    I found what I was looking for, actually I found something that should work.
    ITs GMap.net a program written in C#. The offline stuff it does is perfect, and it even allows you to connect to map servers other than google.

    http://greatmaps.codeplex.com/releases/view/20235

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