I have no idea! We created a new Unity project specifically for this game on the first day of the jam, so it's not like we were even adding assets to an old, blank project.
I don't know what the significance of that date would be, either. Maybe when I last updated my version of Unity?
If you're worried about some cheating or other funny business going on here, I'm planning on making a video documenting the whole process of the game's creation and throwing that up on Youtube, so you'll be able to see everything from the initial idea to prototypes and such being made throughout the week.
We were sure to record footage at the end of each day to track the current state of the game, so it should all be pretty much indisputable.
Thank-you for pointing this out, though! If I had to guess, I'd wager that it's something weird that Unity did, more so than something sinister we did!
