In fact, most servers were either completely empty or lightly-populated. This occurred around 1:30 PM on May 27th, 2014.
A bit afterwards, I decided to go incognito (aka, in disguise) and stalk the area. That is, until I finally spotted some players. I interviewed some of them, but received no luck. Nobody knew what had happened.
For a split-second, I went off guard and made my way into the Penguins-Only Party. Not completely bare, but still lacking a large crowd, as well.
Unfortunately, I did not retrieve the server I was currently in for the party. After a while of pondering over the day's mystery, I returned to Balkan. Oh my...
Full once again? Are you kidding me?! Or at least, that's what I thought to myself. Although I still have no exact answer towards the oddity, I do have a theory. Animal Jam itself couldn't have been hacked, or else their would be more obvious proof. The website, I believe, was likely being either updated, lagged, or glitched. Have any more possible theories? Don't be afraid to share your thoughts in the comments below!