There are four Simple Keys in Hollow Knight: Silksong, which are key items that allow unlocking locked doors to access shortcuts, new areas, or rare items. These keys can be found in the following locations:
- Bone Bottom: Purchase from Pebb for 500 Rosaries.
- Sinner's Road: Defeat the Roachkeeper at the top of the tower.
- Sands of Karak: Loot the corpse sitting on the eastern bench.
- Songclave: Purchase from Jubilana for 650 Rosaries after completing The Wandering Merchant quest.
Simple Keys can be used at four specific locked door locations:
- Bone Bottom: Opens a shortcut through the Wormways leading to the Chapel of the Wanderer.
- Deep Docks: Opens a shortcut to Far Fields and access to Flintslate (a tool upgrade).
- Sinner's Road: Unlocks a cage imprisoning the Green Prince to begin his questline.
- High Halls: Grants access to a rosary vault with enemies and multiple rosary chests.
These keys are important for progressing and unlocking valuable rewards in the game.
