In-game pickup line
“Undefined”
Mechanics
What Undefined does
- The destination can be the Treasure Room, Secret Room, Super Secret Room, or I AM ERROR room.
- The result is unpredictable and an I AM ERROR room can lead onward to the next floor.
From the game files
Recharge
Standard recharge6 room clears
Standard room-clear recharge. Batteries and other effects can change how quickly it refills.
Achievement #125
How to unlock it
Complete Boss Rush as Eden.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
Finish anything important on the floor before gambling on a teleport.
Reference
Game data and sources
The item ID, quality and pool listings, icon, game-file tags, and short pickup line come from the extracted Repentance files. This effect explanation is an editorial summary checked against the references below. Repentance+ can differ. Charge and pickup values shown above also come from the extracted items.xml.
