Stylish metroidvania Hollow Knight is getting a free spooky expansion just before Halloween.

The expansion, titled The Grimm Troupe, will be released on Steam, GOG and Humble Bundle on October 26.

The Grimm Troupe introduces a new quest line around a ritual to light the nightmare candle and summon The Grimm Troupe. It will also include new boss fights, NPCs and enemies.

Hollow Knight is made by Adelaide based developers Team Cherry, who are currently working on bringing the game to PS4 and Switch sometime this year. They said the ports will come with this expansion, as well as the game’s first piece of DLC, Hidden Dreams.