I am trying to create a card game. Physical cards from paper will be used (no computer / mobile game). However, I guess that the form does not matter when considering the folowing question.
It will be a kind of a quiz game. I would like to use a lot of numbers that are available in articles on wikipedia.org. Consider e.g. the following article. It contains a list of 100 largest cities including the population for each such city.
I will choose some subset of these cities (e.g. 50 of them) that are suitable for my game and I will use the statistical numbers from this Wikipedia article. I will find tens of other Wikipedia pages and I will use statistical numbers of this type in the same way. The quiz game will be based on hundreds of numbers taken from tens of Wikipedia articles (articles of the list type like the one mentioned above). There will be no other source of the data.
I would like to sell the resulting card game.
My question is whether I can use the informations from Wikipedia in this way from the legal point of view.
The footer of all the articles I would like to use states that the text is available under the Creative Commons Attribution-ShareAlike License.
I admit that I am always in doubts when trying to understand licences and applying their impact to my particular case.
I have several hypoteses of what the license means to me.
1. As I do not copy the article itself nor a single sentence from it, my card game is not restricted by the license. The information (i.e. the statistical numbers about population etc.) can be used arbitrarily. I need not even state that I have found these numbers on Wikipedia. Selling such card game is not any problem either.
2. The game must contain the information that I have found the numbers on Wikipedia. The articles I have used must be named. I must state that the game itself is subject of the same license. However, it is possible to sell the card game.
3. As the game contains numbers that are recognizably taken from Wikipedia articles, the game must be considered to be a derivative work. Therefore, it cannot be sold under any circumstances.
Which one of my hypoteses is right? ...or are all of them wrong?
Btw. is there some discussion directly on wikipedia.org where similar questions can be asked?
Thanks for help.