Please, can you explain this?
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!
5 years ago(+2)
Unity only changes some of the files, here is a good thread: https://answers.unity.com/questions/12341/date-of-exe-build-is-not-correct.html
I've also added a screenshot of the top 2 games. (blue: actual date, red: wrong date) The red marked date is presumably the installation date of unity, and all the data of an new project are stored in the data file, so the others won't change.
In this case, its not the fault of the creators, but of unity.
5 years ago(+1)
Thank you very much for taking the time to clear that up. That was beyond kind of you.