Lil Portal
ItemRepentanceLocked
familiarGame ID 681★★★★
How do you unlock Lil Portal?
In The Binding of Isaac, Lil Portal is unlocked by earning the Mother completion mark as Apollyon (Character).
Structured pathSource-backed requirements are mapped into trackable steps.
Spawns a familiar that flies forward, consuming pickups in its path and dealing damage to enemies. Each pickup increases its size and damage and spawns a Blue Fly. [Before Repentance+] Every 4 pickups, opens a portal that leads to an unexplored room. [Repentance+] After 1 + (stage number) pickups, opens a portal which leads to a special room with contents that persist between floors.
See the full unlock path for Lil Portal — 5 steps- Defeat Hush 3 times to unlock A Secret Exit. source
- After A Secret Exit is unlocked, a locked door to Downpour appears after completing Basement/Cellar/Burning Basement I or II. source
- Collect Knife Piece 1 in Downpour/Dross II. source
- Collect Knife Piece 2 in Mines/Ashpit II. source
- After defeating Mom in Mausoleum/Gehenna II, stab the flesh door that appears with the knife familiar to open it. source
- Defeat the Mausoleum version of Mom's Heart behind the flesh door, then reach Corpse II and defeat Mother. source
What unlocking Lil Portal leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13