Talk:Planetarium

Planetarium: Terra Item
Could someone include in the item pool table that Terra also grants +1.0 damage? And maybe another note on the damage modifier?

R Key
Is anyone able to look into using the R Key and how that changes the chances? Thanks in advance! -FlaminHotFledge (talk) 19:15, 16 April 2021 (UTC)

Answer: Seems like using the item resets Treasure Room counter. I've gotten 3 Planetariums in total during one of the runs (one before using R Key and two after, with Treasure Rooms being skipped in both cases). I forgot to save the seed sadly.

Seed for planetarium
Is it relevant to add a seed to see a planetarium? If it is you can add this one: Q2K39R3J (hard), there is a key in an empty room on the floor to open the planetarium.

Multiple Items
Is it worth noting that multiple items can be found in the Planetarium? screenshot removed since file was deleted; please use external file hosts for screenshots
 * Someone will eventually upload proper pictures done with the level editor of all the existing layouts (there are only 7), but I suppose a mention about it is okay even so. --Frionil (talk) 20:00, 28 April 2021 (UTC)

Planetariums: Challenges
Has anyone tested whether Planetariums can spawn during challenges?
 * Answer seems to be: only if treasure rooms are allowed. No amount of bonus stacking makes planetariums happen if the challenge denies treasure rooms. --Frionil (talk) 20:00, 28 April 2021 (UTC)

The Bible from planetarium
Is it known that you can get a bible from a planetarium? (depths 2 on LLS2RQMP, skipped depths 1 treasure room)
 * Yes, that happens when you pick up, bibles are added to every pool. --Frionil (talk) 21:54, 2 May 2021 (UTC)

Red Planetarium
If Isaac enters a Red Planetarium via Red Key, does that affect normal Planetarium chances to appear?

Answer: seems so. I entered a RP in Basement and didn't get any more Planetariums up to Depths II despite skipping all Treasure Rooms.

Mirrored World Treasure Room
I assume that the treasure room in the mirrored world that contains Knife Piece 1 doesn't affect Planetarium chances cause that would be very dumb but I'm not sure how to test that idea. Any thoughts? --Sirtimmothybrentwood 19:26, 9 May 2021 (UTC).
 * It doesn't. The page already mentions that the chance is based on stage number minus the number of visited treasure rooms. --Blcd (talk)

Card Reading may not count towards unlock
Run with, took , , and. Got no unlock. I didn't see other users mentioning the latter when talking about the Planetarium, I believe it doesn't count as an astrology item like. --SirDangel (talk) 13:59, 14 May 2021 (UTC)
 * It does which can easily be seen in the  file as it has the   tag. I personally unlocked Planetariums by buying this item from the shop. If it doesn't happen for you, you might not be running the latest version of the game because Zodiac and Card Reading were added to the Planetarium unlock in the last patch. PS: Starter Deck is not counted towards the unlock, you might be confusing it witk . OciXCrom-gpuser (talk) 14:03, 14 May 2021 (UTC)
 * I don't have the last update installed, I guess that's the problem, thanks for the confirmation. Btw I know is not counted; I would have said "unlike Starter Deck" otherwise. --SirDangel (talk) 14:40, 14 May 2021 (UTC)