A Strange Door



A Strange Door is a special exit that is unlocked by beating Mother for the first time. It leads to a special version of / II, which contains, which starts the Ascent, and eventually and the fight against Dogma and The Beast.

The door spawns in the starting room of // II. It can be opened by giving it or. This can be done through methods such as using a teleportation card, a Telepills, a teleport activated item, or after defeating Mom, escaping the boss room. The door can also be opened with Broken Padlock,, Faded Polaroid or , but not or Mysterious Paper.

Having more than one of or, (such as through  or ) will only remove one to open the door. 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 (or a Telepills if holding ), 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, allowing the player to unlock without unlocking the Polaroid or Negative. This makes the Faded Polaroid,, or Broken Padlock the only ways to open the door until these items are unlocked.