For those that wanted to finish tomorrow -- go ahead! That's a fine deadline and be proud of the game you got done!
But a few folks were gonna seriously overshoot the jam (and I myself might want to do the jam), so I extended it through January. Why the heck not?
So there you go. For those that wanted it -- though we'll be heading back to work, enjoy the nights and weekends of the game dev to finish your game!