Using images in games?

Question

Licenses for software and other works

Good day! Can you please tell me if I can use images (photos) from the wikimedia site in my mobile game, which has paid purchases?
Here is an example of such pictures:
https://commons.wikimedia.org/wiki/File:JasonVoorh...
https://commons.wikimedia.org/wiki/File:Zidane_BW....
Almost all of them are licensed under a Creative Commons license. There may be multiple licenses. Did I understand correctly that I can use such pictures, but each picture should have a signature on who its author is?! Is it necessary to attribute something besides the author? Can I, for example, on the About page of the game indicate that all the pictures are from this site, is it possible to list the authors there? In some games, I saw that information about the author is attributed in small vertical type at the bottom right of the photo. So it is possible? Thank you.

Answer 1

Creative Commons is not a license, it's a foundation , it has published seven fundamentally different licenses: three free and four non-free, six of them in five versions, for a total of 31 Creative Commons licenses.
As for Wikimedia Commons, works are stored there not only under CC licenses, but only under free ones; they all have different conditions, although the creation of derivative works and their use in commercial, in principle, everything is allowed by definition . However, the use of some of them can be quite cumbersome in this case.
Which licenses you may encounter: CC0 and other public domain transfer formulas ,WTFPL , BSD three-clause license , CC BY (different versions), CC BY-SA (also different versions), GNU GPL , GNU FDL .
I have listed them here in ascending order. The GNU FDL is a license for books, it requires that the work have source code in addition to the binary form, and obliges you to distribute your full text along with the work - in short, it is not suitable for images; nevertheless, there are quite a few pictures under it, because until 2008 it was the main license of Wikipedia and related projects. GNU GPL- license primarily for programs, considerations for applicability to images are the same; however, there are many icons spread across it.
These two, plus CC BY-SA , are copyleft licenses, requiring that a derivative work of what they protect should also be free under no more restrictive terms. If, according to a shaky but generally accepted opinion, copyleft graphics for the game do not extend their copyleft to the code, because they are quite independent from each other; then an element of game graphics graphics on game graphics - most likely yes.
At first glance, this is not a big problem, because you, as a highly moral person, will sell your work as free anyway, right? :-) But here comes the compatibility problemlicenses - you want to borrow some from work under one copyleft license, say the GNU GPL, and some from under another, say CC BY-SA; both require that the final work be on the same conditions - how to be? That's right, no way - it's simply impossible to combine other people's work under the GNU GPL and CC BY-SA within your own.
As for what to write in attribution, it depends on the version of the CC BY-*: if I don’t confuse anything, then the current fourth one requires a URI, and the previous URI is not required, but the title of the work is required.