Sealed Cave glitch

The Sealed Cave Glitch is a glitch found in Final Fantasy IV in which the player can completely skip doing the Sealed Cave dungeon, thus effectively avoiding fighting the Demon Wall boss. In order to perform this glitch, after the player has gotten Rydia back as an adult after defeating Golbez, and after talking to King Giott, if the player were to have Rydia cast the Warp spell, the player will be returned back to the Crystal Room, from which the player can pick up the Darkness Crystal and leave the room back to the throne room. When the player arrives at the Sealed Cavern, the event will play as though the player had already gotten the crystal from the dungeon. However, if the player wishes to get any of the treasures inside the dungeon, they will have to do so with one less party member.