Licensing

• A license tells people what they can do with your work, including how they use it and what they can do to it.
• There are many different licenses. A copyright is like a license for a patent. In the Open Source world, there are many useful licenses to work with.
  • Creative Commons (http://www.creativecommons.org) has seven licenses:
    • CC-BY: Attribution
    • CC-BY-SA: Attribution and Share Alike
    • CC-BY-ND: Attribution, No Derivatives
    • CC-BY-NC: Attribution, Non Commercial
    • CC-BY-ND-NC: Attribution, No Derivatives, Non Commmercial
    • CC-BY-NC-SA: Attribution, Non Commercial, Share Alike
    • CC0: Public Domain
  • Other FOSS Licenses include the GNU GPL license, the ZLIB license, and the MIT license. Learn about them here: http://www.opensource.org/licenses

• When releasing your work, you should include a license. Your license is usually determined by the licenses of the content used in your work, e.g. a texture in a map. If a texture used in your map doesn't allow for commercial use (meaning you profit from it), then you can't sell your map (or game with the map). You can still release the map, but it must be for free. On Quadropolis, all maps are for free, since nearly all the textures included have a CC-BY-NC-ND license.