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Necropolis

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Necropolis is the alternate floor for the third chapter, The Depths. It appears similar to the depths with pits, spikes, sentries and key tiles, except the walls are coated with pillars. There are many new monsters and bosses that make their debut here.
Necropolis

Isaac on Necropolis I.

Rooms

  • 1: The room will always appear once in this floor
  • 2: The room will always appear twice in this floor
  • Possible: There is a chance for this room to appear, usually due to certain criteria being met
  • *: This room can only appear due to a bug or a special item
  • -: The room cannot appear in this floor.


Rooms in core game
Rooms Necropolis 1 Necropolis 2 Necropolis XL Note
Regular Rooms - - -
Treasure room icon Treasure Room 1 1 2
Shop icon Shop 1 1 1 There is always one shop, even in XL floors.
Secret room icon Secret Room 1 1 1
BossRoomIcon Boss Room 1 1 2 Boss Rooms are always linked in XL floors.
Challegne room icon Challenge Room Possible Possible Possible Will only be generated if Isaac has full health while entering the floor.
Arcade icon Arcade Possible Possible Possible Only generated when Isaac has 5 Coins upon entering a new floor or part.
Super secret room icon Devil Room Possible

Possible

Possible After fighting Mom, a Devil Room can appear and the sound will still play, but it is not possible to enter it as no door will appear. Using The Joker Card or teleporting out of the Boss Room and re-entering will allow you to enter the room.
Super secret room icon I AM ERROR Possible Possible Possible Only reachable by using the Telepills, which have a 6.66% chance to teleport Isaac to this room.
Rooms with Wrath of the Lamb
Rooms Necropolis 1 Necropolis 2 Necropolis XL Note
Super secret room icon Super Secret Room 1 1 1
Curse room icon Curse Room Possible Possible Possible
Sacrifice room icon Sacrifice Room Possible Possible Possible
Angel room icon Angel Room Possible Possible Possible After fighting Mom, a Devil Room can appear and the sound will still play, but it is not possible to enter it as no door will appear. Using The Joker Card or teleporting out of the Boss Room and re-entering will allow you to enter the room.
Libary icon Library Possible Possible Possible 5% base chance to spawn, 25% if Isaac is holding a book.
Boss challenge room Boss Challenge Room Possible Possible Possible

Monsters

Monster Description WotL DLC
Eternal Fly
White fly
Invulnerable Fly that circles Corny PoopNuttypoop, Holy LeechesHoly leech or HangersHang man.
Fat Fly
Superpooter
Alternate version of PootersPouter. Fires 2 shots in a V-formation and does not deal touch damage.
Red Boom Fly
Spitfly
Flies around the room diagonally, dealing touch damage and exploding into 6 directional blood shots upon death.
Spit
Puffer
Flies slowly towards Isaac, exploding into an IPECAC shot upon death which targets other Spits in the room, or Isaac.
Spider
Black spider
Moves erratically around the room, damaging Isaac by touch.
Big Spider
Big spider
Moves erratically around the room, splitting into two SpidersBlack spider upon death.
Gut
Green boil
Stationary enemy that shrinks upon being hit. Will quickly swell up if not killed in time. Fires an IPECAC shot at Isaac when fully swollen.
Sack
White boil
Stationary enemy that shrinks upon being hit. Swells up slower than Guts and Boils. Spawns a SpiderBlack spider when fully swollen.
Walking Boil
Walking boil
Mobile Boil that cannot shrink, but has a finite amount of health. Fires short-ranged blood shots with varying sizes at a reduced fire rate.
Walking Gut
Walking green boil
Mobile Gut that cannot shrink, but has a finite amount of health. Fires IPECAC shots at a reduced fire rate.
Walking Sack
Walking cocoon
Mobile Sack that cannot shrink, but has a finite amount of health. Spawns SpidersBlack spider.
Hive
Hive
Walks around the room, avoiding Isaac while spawning Attack FliesCUSTOMredfly. Spawns a large number of FliesFly upon death.
Swarmer
Swarmhead
Slowly floats around the room, spawning a Pooter upon taking damage. Spawns a large number of Flies upon death.
Leaper
Leaper
Jumps around the room quickly, but not as fast as F. Hoppers. Occasionally jumps high into the air, dropping down elsewhere while firing 4 blood shots in a plus pattern.
Gurgle
Gurgle
Slowly walks towards Isaac, firing short-ranged IPECAC shots at him. Has much more health than regular Gapers.
Mask + Heart
Mask Heart
Invulnerable mask with a slow-moving Heart. Functions similarly to a Knight. The Heart fires 4 blood shots in a plus pattern when Isaac gets near. Killing the Heart will automatically kill the Mask.
B. Licker
Centipede
Attaches itself to other B. Lickers, erratically moving around the room, similar to Larry Jr.
Kamikaze Leech
Leech2
Quickly charges towards Isaac when he gets in its line of sight. Explodes with a large blast radius upon death.
Double Vis
Vis Fio
Charges up a Brimstone laser which fires from both sides when Isaac gets in its line of sight.
Chubber
Chubby Vis
Fires a Little Chubby-like familiar that deals one heart of damage when Isaac gets in its line of sight.
Slide
Slide
Quickly slides towards Isaac when he gets in front of it.
Keeper
Keeper
Hops around the room, firing 2 blood shots in a V formation at Isaac.
Hanger
Hang man
Floats around the room, firing 3 blood shots at Isaac. Has an Eternal FlyWhite fly circling it.
Stone Grimace
Turret
Stationary and invulnerable mosnter that fires a fast-moving blood shot at Isaac. Stops firing when room is cleared.
Vomit Grimace
VomitTurret
Stationary and invulnerable monster that fires an IPECAC shot at Isaac. Stops firing when room is cleared.
Bosses found in normal rooms:
Embryo
Embryo
Aimlessly hops around the room, damaging Isaac by contact damage.
Blastocyst
Blastocyst full
Hops around the room, firing 4 large blood shots in a + pattern. Splits into two smaller parts upon taking enough damage, and into an Embyro at the end.
Fistula
Fistula
Floats around the room diagonally, splitting into smaller, faster versions every time it takes damage. Smallest versions spawn a Charger when killed.
Chub
Chub Full3
Moves around the room randomly, charging at Isaac if he gets in her line of sight. Constantly spawns ChargersCharger.

Headless Horseman (Head only)
Headless head ingame

Charges around the room 3 times, in a pattern similar to War. Occasionally fires 3 blood shots at Isaac at once.

Bosses encountered in regular rooms:

Bosses

Trivia

  • The music of this level is very similar to the music in the Larries Lament level of Super Meat Boy.
  • Necropolis 2 is unnumbered. However, sliding your mouse around the name will reveal the "2". This also applies to Necropolis XL.
Chapters
No Core Game Wrath of the Lamb
1 Basement Cellar *
2 Caves Catacombs *
3 The Depths Necropolis *
4 The Womb Utero *
5 Sheol Cathedral
6 The Dark Room The Chest
* Alternate Chapters

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