There are a number of items scattered around the castle, of which the player may carry up to three at a time. Some of these are always in the same place at the start of the game, whereas others are distributed randomly. Items include differently-coloured keys which will unlock their respective doors, the three pieces of the ACG key, and other items that affect certain enemies or are mere red herrings. Common enemies appear in each room upon entering and will attack the player on sight. Collision with these enemies destroys them but drains a portion of the player's health. There are also stationary poisonous fungi which will drain health constantly if the player is in contact with them, and enemies that require special items in order to either distract, repel or kill them, otherwise they remain in the room, invulnerable to conventional attacks, and rapidly drain the player's health if touched.