The Special Key is an optional item that unlocks the S.T.A.R.S. office closet, revealing a special costume for your character. To obtain it, you must complete the game in under three hours (for the original PlayStation version) or under a certain time limit depending on the version, and save less than three times. This is a challenging feat for a first-time player. If successful, the Special Key will be available in the Item Box on your next playthrough. Using it in the S.T.A.R.S. office will allow you to change into an alternate costume, which is purely cosmetic but a fun reward for skilled players. This encourages speedrunning and efficient play.
