Binding of Isaac: Rebirth Wiki

1up! is a passive item.


  • Gives Isaac an extra life. Upon death, he will respawn in the most recent non-hostile room with full health, after which 1up! will disappear.
    • If Isaac has no Red Heart Containers, he'll respawn with a Half Soul Heart instead.
  • The 1up! mushroom begins following Isaac like a familiar upon pickup, but doesn't do anything. It disappears when its life is used up.
  • Added in Afterbirth This item belongs to the Fun Guy set. Collecting three items from this set will transform Isaac into a walking mushroom.


In-game Footage[]


PS4 PC Normal mode only CWSQ TNM8 (First Secret Room Secret Room east of spawn)


  • This is a reference to the Super Mario franchise, wherein collecting a green mushroom would give you an extra life.