Wikipedia has a list of English words sorted by frequency. I used that list to create a small hangman game and I would like to put it up on GitHub. The game is probably going to be open-source (GPL). Do I have to give Wikipedia credit or something like that? I found this article on Wikipedia Reusing Wikipedia content but I don't quite understand it and I am not really good with licenses and all.
Question: Can I use that list in an open-source game I will put up on GitHub? Do I have to give them some kind of credit? If so, exactly how? I would quite like to not bother with attribution and all, this is just a small game and I already make no profit on it.
I've seen this question, but it's presumable about commercial use of the material. So, I don't know how much of it applies here. Also it's sort of directly republishing the material, but I am just using it to make the game work. The words are in a text file and I load them at runtime.
In case that other question applies here also, I would appreciate a small example of how to give attribution. Do I just say "I took the word list from Wikipedia" in the license file in GitHub after the GPL conditions? Do I note that in a separate file?