
The player will be unable to see the shadows of Vampire Bats and BFB form before they spawn.Wilba will become a Werepig at the start of every 'day'.Woodie will become a Werebeaver at the start of every 'day'.

All Mushrooms will turn into Mushtrees.All regular Flowers turn into Evil Flowers.The moon icon that shows the player the phase of the moon will be constant, showing a reddish moon.Trees take 50% longer time to grow to next stage.There will no longer be any day or dusk periods, only night, meaning sanity will constantly drain out of any Interiors.This will replace their regular trading requests however, they will still accept goods in exchange for oincs. Pigs in Swinesbury and the Palace City will warn of the upcoming Aporkalypse about 7 days before it begins, saying "Doomsday is near!", "Fear and porktent!", "Porktentous figures!", "Something wicked this way comes!", "The aporkalypse approach-eth" and, "Woe, destruction, and decay!". The Aporkalypse lasts forever until the player reverses the Aporkalypse Calendar for the first time, then it lasts for 20 days if the player doesn't reverse the Aporkalypse Calendar the next time the Aporkalypse is triggered. Many creatures and aspects of the game change, getting much more difficult.

During this event, the world will constantly be lit up and tinted red, the result of an annular eclipse, and the player is completely immune to Charlie out of Interiors. Without player control, this happens on the start of the 61st day in a Hamlet world, the players would have gone through each season twice before the Aporkalypse. The Aporkalypse is an event in Hamlet DLC that happens when all three sigils on the Aporkalypse Calendar align.
