Trick or Treat - a new achievement for breaking 31 Halloween eggs.
The eggs know you - now and then an egg or the narrator mentions your name, the time, the day, what you've broken and how long you were away.
Screen flashes option - turns off the full-screen flashes and the Void Egg's colour inversion.
New shells - eggs your utensil needs more than 10 hits for show up less, so a new shell opens on eggs you can break.
New egg kinds - tougher, and they pay more yolk.
Sky bar - fills on a log scale, so it shows progress through the whole shell.
Hatching - asks first, with the feathers you'll get and what you keep.
Oddities - 3 to 7 minutes of play between drops, and ones you haven't found are 4× likelier.
Void Egg - its colour inversion comes at most once every 1.5 s, so a crowd of them can't strobe the screen.
Options at large UI sizes - the panel scrolls instead of running off the screen.