Given acidity is one of the 5 basic characteristics of wine, I suspect people, even adults, have been enjoying sour flavors for a few thousand years. Also, preserves have tended to be sweet, salty, or, you guessed it, sour for a long time, as well. They only thing that has really changed is our delivery vehicle for sour snacks.
It was a pretty good game a year or so in, and has only gotten better. I haven’t played for a while, but I put over 100 hours in first.