Sacrifice Room

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Sacrifice Rooms are special rooms that contain a set of spikes in their center. Isaac can damage himself on the spikes for a chance to spawn a brown chest or golden chest. The chance is determined by the seed, meaning Isaac must damage himself on the spikes for a set amount of times for a chest.

DLC Indicator.png Sacrifice Rooms were reworked, with a wide variety of possible rewards.

Rewards DLC Indicator.png[edit | edit source]

Number of sacrifices on Current Floor Possible Rewards
1st/2nd
  • 50% chance - Nothing
  • 50% chance - 1 Penny
3rd
  • 33% chance - Nothing
  • 67% chance - "You feel blessed!" (increased chance to receive an Angel Room over a Devil Room for the current floor; see Angel Room Generation Chance)
    • This does not increase the chance of receiving a Devil/Angel room after defeating a boss; it only increases the chance of getting an Angel Room over a Devil Room.
    • This can cause an Angel Room to spawn even if you have already taken a deal with the devil.
    • Note that this is less of a modifier than the "You feel blessed!" effect below.
4th
  • 50% chance - Nothing
  • 50% chance - 1 random chest
    • The type of chest is governed by the same mechanic as room drops. Thus, brown chests are more likely to spawn than any other kind of chest.
5th
  • 33% chance - 3 pennies
    • These coins do not have a chance to spawn as a nickel or a dime.
  • 67% chance - "You feel blessed!" (increased chance to receive an Angel Room over a Devil Room for the current floor; see Angel Room Generation Chance)
    • This does not increase the chance of receiving a Devil/Angel room after defeating a boss; it only increases the chance of getting an Angel Room over a Devil Room.
    • This can cause an Angel Room to spawn even if you have already taken a deal with the devil.
    • Note that this is more of a modifier than the "You feel blessed!" effect above.
6th
  • 33% chance - Teleport to the Devil/Angel Room.
    • If the Devil/Angel Room of the floor has not been entered yet, an Angel Room will be guaranteed to spawn (even if you have already taken a Devil Deal).
  • 67% chance - 1 random chest
    • The type of chest is governed by the same mechanic as room drops. Thus, brown chests are more likely to spawn than any other kind of chest.
7th
8th
9th
  • 100% chance - Uriel battle
10th
  • 50% chance - 7 soul hearts
  • 50% chance - 30 pennies
11th
12th and onwards
  • 50% chance - Nothing
  • 50% chance - Teleport directly to the Dark Room

The payouts only depend on the number of sacrifices made. The number of sacrifices is reset to 0 when the player goes to the next floor.

Layouts[edit | edit source]

Notes[edit | edit source]

  • The results from sacrifices are all predetermined ahead of time and not when the player steps over the spikes.
    • Items/trinkets that are spawned can be changed, however. If the player checks the items and resets using a method such as the Glowing Hour Glass, they can try to find that item on the same level then go back and make the sacrifice. This new item will again apply with the same rules.
      • Resetting will reset your sacrifices to what it was prior to your reset, unless stated otherwise.
  • Spikes in a sacrifice room can not be flown over, so they can still be used even if Isaac has Flight.
  • Invincibility and shields will not trigger a sacrifice (including Holy Mantle).
  • If the player holds the Callus, the sacrifice room will not function.

Notes on Rebirth Sacrifice Rooms (non-revamped)[edit | edit source]

  • Only one chest can be received per Sacrifice Room.
  • Taking damage down to half a red heart will always drop a chest. Because ??? has no red health, dropping down to half a heart does not guarantee a drop.
  • Dying on the spikes guarantees a chest, which can be useful if Isaac is low on health and has more lives from something like the Dead Cat.
  • Dying in a sacrifice room with the Missing Poster will reveal puzzle pieces used to unlock the The Lost.

DLC Indicator.png Notes on Afterbirth Sacrifice Rooms (revamped)[edit | edit source]

  • If a player receives both of "You feel blessed!" effects, they will stack and the player will be a 65% chance for the respective coin flip (see Angel Room Generation Chance).
  • The amount of health that the player has left after taking a sacrifice does not affect the payout probabilities.
  • The amount of luck that the player has does not affect the payout probabilities.
  • If Uriel or Gabriel are spawned, they can be despawned by exiting and reentering the room. However they will not drop the Key Pieces unless they are defeated.
    • An angel won't drop anything if you already have their corresponding key piece.
  • Dying in a sacrifice room while holding Missing Poster will unlock The Lost.
  • The Wafer, Cancer, and DLC Indicator.png Percs pills reduce the damage of the spikes to half a heart, which allows the player to make more sacrifices.
  • If the player is using the BASE MENT seed, the Dark Room teleport will allow them to escape the infinite Basement levels.
  • Even if the player has not unlocked the Negative yet, they will still be able to teleport to the Dark Room.
  • Dying and respawning does not affect the number of sacrifices made, so Dead Cat can be used on low health to try and gain soul hearts.

Unlockable Achievements[edit | edit source]

Trivia[edit | edit source]

  • Afterbirth† Indicator.png It is possible to use a Sacrifice Room to access the Dark Room while in Endless Mode. This can be used to start a Victory Lap while the BASE MENT seed is still active.

Bugs[edit | edit source]

Bug Bug! Isaac's Heart can be damaged by the spikes in a Sacrifice Room. However, doing so will yield no rewards, making Sacrifice Rooms useless if Isaac has this item.


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