The Trick or Treat update arrived on October 17, 2026. The wiki says it is similar to the 2025 Trick or Treat event: you visit the houses of various characters around the map and light the candles around their houses to activate them. Each visit gives either a "trick" or a treat.
Main changes
- A new Halloween-themed lobby, including Happy's shop.
- Trick or Treating returns.
- New mechanic, costume collecting. You collect costume pieces around the map. With 4 pieces (hat, torso, pants, shoes) you have a greater chance of getting candy rather than a trick at the houses, and you receive more candy if the pieces match. Arriving at a house with no costume gives a trick and no candy.
- You can build a costume closet at your crafting table (3 wood needed).
- Costume outfits: dinosaur, pirate, astronaut, werewolf, lobster and mummy.
- Costume pieces can come from costume boxes, chests and random drops from wolves, cultists and other enemies.
- Roughly 10 houses spawn on the map.
Furniture
Furniture can be bought with collected candy, including Halloween decor, a spooky crock pot, fancy dressed clothes, a coffin chair, a pile of skulls, spooky braziers, standing coffins and a shrapnel grenade.
Source: the 99 Nights in the Forest Wiki, Updates page.