Licensing question about stendhal HOT 1 OPEN

Stendhal has many assets from many different sources under different licenses (all GPL compatible). We keep a list of our assets with their license info & source here. You can use the assets however you like within the restrictions of the pertaining license. Be careful if your project uses DRM. Many licenses explicitly do not allow for inclusion in such.

GPL licensing with assets is a bit obscure. I can't tell you in 100% confidence how to use them. My understanding is that to include GPL licensed assets, your project must be GPL compatible. Creative Commons licensing is a bit clearer. You can use CC licensed assets in most projects, so long as you follow the terms of the license. E.g., crediting the author and/or linking to the source in a manner that is clear to anyone using your software as the author requires. Again, be careful about DRM projects. Some of the less strict CC licenses allow inclusion in DRM protected software, but others do not. Also be aware of differences across different versions of the licenses.

In order of most strict to least, the different licenses that our assets are under are:

• GPL
• Creative Commons Attribution-ShareAlike (CC BY-SA)
• Creative Commons Attribution (CC BY)
• OpenGameArt.org Attribution (OGA BY)
• Creative Commons Zero (CC0)

Another thing to keep in mind is that you are using assets from people who you assume understand the licenses they are using. There is always risk of someone releasing something to the public under one of the open source licenses that is actually infringing on some copyright. So just be watchful of anything that looks as though it may not be an original work, or may be based on some non-free intellectual property. We spent a couple years replacing artwork & media that had been added to the project without considering licensing issues. Unless you can be sure of who the original authors of the assets are, it can be risky, even getting assets from a project like Stendhal.

from stendhal.