Dear Maruška,
I think it is good idea. In my opinion it would be great if you (or we) gave te students an opportunity to work in pairs or even in groups and scan the flashcards. All the members of the group could then have it. There are students who would love to make their own flashcards but there are ones that would have problems with it as well. The game is a great way to use the flashcards even in the class.
Anička