#24PlanetariumPlanetariumRoom
The Planetarium requires a key to open. It contains a single item from the Planetarium item pool and, rarely, some cards.

Planetariums may only appear up to Chapter 3. They can also appear in Mausoleum/Gehenna II accessed via A Strange Door.

The base chance for a Planetarium to appear is 1%, and it can be modified in the following ways:
• +20% → going to the next floor.
• -20% → entering a Treasure Room.
• +24% → holding Telescope Lens.
• +15% → holding Crystal Ball, or 100% if a Treasure Room has been skipped.
• +15% → holding Magic 8 Ball.
• +6.9% → holding Sausage.
• Set to 1% → entering a Planetarium, or set to 10% if holding Telescope Lens.

The chance for a Planetarium to appear may not go below 0%.

Entering a Treasure Room inside the Mirrored World does not affect the Planetarium chance.

If the floor is affected by Curse of the Labyrinth!, it will grant a double bonus to the Planetarium chance when going down to the next floor.
Associated item pool: Planetarium.
Unlock: Collect 3 items with the stars item tag in a single run.
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Added in DLC
Unlockable Grants costume Has YouTube video Animated icon Favorite (?)

This page shows updated information about all items in the new Repentance+ (Online Co-op) DLC.
To see information about items in the previous Repentance version, check this page instead.


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