Repentance · Hidden rooms

Red Room

Expand the floor into extra rooms and use Home's hidden red door to unlock tainted characters.

Entry / cost at a glanceA red-room creation effect

Recognize the entrance

What the doorway looks like

Red-room tools create the doorway at a valid red outline on a wall.

Red doorway

Red Room: Red doorway, closed
Closed
Red Room: Red doorway, open
Open

Original game-art examples, shown facing upward where relevant. Door textures and appearance can vary with the floor or item effects.

Find the entrance

How to enter Red Room

Use Red Key, Cracked Key, Crystal Key, or Soul of Cain where a valid red door outline appears.

What you can find

Rewards and opportunities

Extra ordinary or special rooms, access to an Ultra Secret Room, and the tainted-character room at Home.

Unlock tainted characters at Home

Before you commit

The risk to plan around

Extra rooms can contain combat. Trying to create a room beyond the map boundary can lead to I AM ERROR.

  • A Red Room takes on the rewards and rules of its generated room type.
  • Normal red-room exploration is unavailable in Greed mode.

Useful connections

Items that affect this room

Reference

Repentance rules and room variants

This guide describes the room type. Exact layouts and contents can vary. The rules use Repentance references; Repentance+ can change them.