I see this is an old post, but i did not see a newer one.
Are the stats frozen currently? or are they on an update delay?
Total plays on the main arcade page is set to zero, along with unique players. Same on my games (and all games uploaded recently it seems) even tho i know a few people tried them.
Tried to google etc incase they were set to weekly updates rather than realtime, but found nothing more helpful than this thread.