Binding of Isaac: Rebirth Wiki

We Need To Go Deeper! is an activated item.

Effects[ | ]

  • Spawns a trapdoor that leads to the next floor upon activation.
    • (except in Repentance) There is a 10% chance the trapdoor will instead lead into a Crawl SpaceCrawl Space.
    • (in Repentance) Some tiles will appear with a special graphic (for example grass or a piece of garbage in BasementBasement). Using this item on these tiles will guarantee a Crawl SpaceCrawl Space. Only one trapdoor to the Crawl Space can be made per floor, as all subsequent uses will guarantee a trapdoor to the next floor.
  • (in Afterbirth † and Repentance) The item may be used on the Dirt Patches in the Dark RoomDark Room to dig up a random type of chest.

Notes[ | ]

  • All Crawl SpaceCrawl Space trapdoors on a floor lead to the same Crawl SpaceCrawl Space.
  • It can be used in DepthsDepths II to access WombWomb even before defeating Boss Mom ingameMom and gaining the achievement which 'unlocks' the Womb.
  • If used in WombWomb II/UteroUtero II/(except in Rebirth)Scarred WombScarred Womb II, the trapdoor will always lead to SheolSheol.
  • (except in Repentance) Has no effect in the CathedralCathedral, ChestChest, SheolSheol, Dark RoomDark Room, (except in Rebirth)?????? and (in Afterbirth † and Repentance)The VoidThe Void (no trapdoors of any type will be generated).
  • (in Repentance) It can only create crawl space trapdoors in the CathedralCathedral, ChestChest, SheolSheol, Dark RoomDark Room, ?????? The VoidThe Void, CorpseCorpse II, HomeHome, and during the Ascent.
  • Using the item on the 3 tiles directly horizontal to a door, including Secret RoomSecret Room entrances, will cause the trapdoor to spawn in a random spot next to Isaac instead, making this item an indirect aid to locating Secret Rooms.
    • (in Repentance) If a special graphic is in these spots, the trapdoor will likely be moved to a spot that won't spawn a Crawl SpaceCrawl Space.
    • Spawning enough trapdoors can cause a trapdoor to spawn in these spots.
  • This item can be used to destroy rocks if used while Isaac is flying over a rock.
  • (except in Repentance) When used on the last floor of a challenge, a trapdoor to the next floor can spawn. If it is entered, Isaac must beat the boss of that floor to spawn the ending trophy.
  • (in Repentance) Trapdoors will not spawn on challenges on floors at the final destination, however certain challenges like Red Redemption may still spawn a trapdoor leading to the next floor.

Synergies[ | ]

  • (in Repentance)Collectible Book of Virtues iconBook of Virtues: Spawns a skull wisp on the middle ring that shoots bone tears.
  • (except in Rebirth)Collectible Car Battery iconCar Battery: In most cases, no extra effect. When used near the entrances to a room, the item can occasionally open 2 trapdoors at once, (except in Repentance) increasing the chance of opening a Crawl SpaceCrawl Space.

In-game footage[ | ]

Trivia[ | ]

  • The name of this item is a reference to the movie Inception.

Gallery[ | ]

Bugs[ | ]

Bug Bug! (in Rebirth and Afterbirth) If a trapdoor is spawned inside of a Black MarketBlack Market with this item and is entered, the player is trapped in the Crawl SpaceCrawl Space unless they go to the next floor.