Skeleton Key is a special key item that unlocks the Demon Halls area of the dungeon, allowing access to higher-level content.

• Area Unlock: Specifically unlocks access to the Demon Halls
• One-time Use: Opens the door to the Halls and is consumed in the process
• Progression Item: Essential for accessing late-game content

• Tengu: Dropped by Tengu as part of normal drop table
• Boss Reward: Tengu is one of the sources of this important key

• Unlocking Halls: Used on the special door that blocks access to the Demon Halls
• Consumed on Use: Once used to unlock the Halls, the key is consumed
• Access Gateway: Required to progress to the deepest parts of the dungeon

• Essential Progression: Without this key, the Halls remain inaccessible
• Timing: Can be saved until ready for the challenging Halls content
• Backup: It's a single-use key, so there's no backup if lost
• Priority: Should be preserved for when you're ready for the Halls challenge

• Implementation: SkeletonKey.java
• Key system: Part of the key and lock system for dungeon doors
• Level transition: HallsLevel.java

• SkeletonKey.java
• HallsLevel.java
• SkeletonKey strings

• Tengu (source of the key)
• Demon Halls
• Keys and Locks
• Prison Boss Level
• Items