Derivative art : which licences to choose

Friday, November 15, 2019 - 12:16

This is the topic I created for everytime somebody has questions about how to licence derivative work.

Here is an explanation from MedicineStorm, on one of my derivative works :

Listing all the licenses used by the source material implies people can use any one of the licenses. This is not quite correct. Because it comes from multiple sources, you would need to adopt only the licenses common to all. (This includes any license that can be converted into another. For instance, CC-BY can be converted to CC-BY-SA, but CC-BY-SA cannot be converted to CC-BY)

arcade-gui uses cc0 (which can be converted into any other license, including CC-BY-SA and GPL)
lpc-a-shootem-up-complete-graphic-kit uses CC-BY-SA and GPL
pixel-art-ground-tiles uses just GPL

Therefore, the only license common to all 3 is GPL. As a derivative work, you would need to change the licenses to just GPL, and you should list their attribution instructions in this submission's attribution instructions.

Xom Adept

joined 6 years 8 months ago

Friday, November 15, 2019 - 12:56

I have corrected nearly all my previous derivative works (sorry, I should have taken care of this much sooner, my mistake).

I am on the last one which is problematic : this one.

https://opengameart.org/content/new-submissions-to-the-arcade-art-challenge

There are 11 assets that I used, to produce a pack of 4 images.

I don't know if it is a good idea to keep them as a pack.

1) It would be complicated to find the common licence(s) to all this

2) It would make an enormous list of attributions to people who use any image of this pack

What do you think about this, MedicineStorm? Do I have to delete this pack and re-post 4 separate images, each one with its correct licence and list of attribution?

Xom Adept

joined 6 years 8 months ago

Saturday, November 16, 2019 - 10:25

OK, I have finished correcting licences on all my previous works that were derivative works.

And from now on, I will be careful about this issue.

Xom Adept

joined 6 years 8 months ago

Wednesday, May 13, 2020 - 16:19

I am trying to license the Summer Game Jam banner correctly.

Can an OGA-BY 3.0 license be converted to a CC-BY (and thus into CC-BY-SA) ?

If yes, normally, the license for my banner should be a CC-BY-SA 3.0.

https://opengameart.org/content/oga-summer-game-jam-2020-banner