A Strange Door

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Added in Repentance

A Strange Door locked.png

A Strange Door is a special exit that is unlocked by beating Mother for the first time. It leads to a special version of Mausoleum Mausoleum/Gehenna Gehenna II, which contains 15►Dad's Note Dad's Note, which starts the Ascent, and eventually bringing you to Home Home and the fight against Dogma and The Beast.

The door spawns in the starting room of Depths Depths/Necropolis Necropolis/Dank Depths Dank Depths II. It can be opened by giving it 15►The Polaroid The Polaroid or 15►The Negative The Negative. This can be done through methods such as using a teleportation card, a Telepills, a teleport activated item, or 15►Forget Me Now Forget Me Now after defeating Mom, escaping the boss room. The door can also be opened with Broken Padlock Broken Padlock, 15►Cracked Orb Cracked Orb, Faded Polaroid Faded Polaroid or 15►Sharp Key Sharp Key, but not 15►Dad's Key Dad's Key or Mysterious Paper Mysterious Paper.

Having more than one of 15►The Polaroid The Polaroid or 15►The Negative The Negative, (such as through 15►Diplopia Diplopia or 15►R Key R Key) will only remove one to open the door. Faded Polaroid Faded Polaroid is always taken first if held, then The Negative and then The Polaroid.

A Marked Skull always spawns somewhere on the chapter. Destroying it will drop a guaranteed 0 - The Fool 0 - The Fool (or a Telepills if holding 15►Little Baggy Little Baggy), giving a reliable way to open the door. It is recommended to visit the Boss Rush room for a free item before teleporting out if possible.

Note that defeating Hush thrice counts towards unlocking A Secret Exit A Secret Exit, allowing the player to unlock Corpse Corpse without unlocking the Polaroid or Negative. This makes the Faded Polaroid Faded Polaroid, 15►Sharp Key Sharp Key, or Broken Padlock Broken Padlock the only ways to open the door until these items are unlocked.