"These photos have won" is far below the fold -- I didn't see it until it was over. When it is over, the middle part of the screen is blank -- no game over, no

"These photos have won" is far below the fold -- I didn't see it until it was over. When it is over, the middle part of the screen is blank -- no game over, no thanks, nothing else to do. You need to follow up with the user to keep them engaged. I don't know much about China, or these sample photos, though I got the impression that most of it was "popular symbol vs present-day life". I am wary of what actual insights you can get with this kind of sociological game... seems to me pretty fuzzy, especially since you don't have any data on the users. "Pairwise" and statistics don't mean it's good science.