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Font TeamMeat 1.pngFont TeamMeat u.pngFont TeamMeat p.pngFont TeamMeat !.png
Item icon
Item altar

Table dividing line 1.png
Table dividing line 2.png
Item Pool Secret Room.png Secret Room
Added in AfterbirthGreed mode onlyItem Pool Boss.png Boss
Table dividing line 3.png
Added in Afterbirth (page 1, column 11, line 1)
Removed in Afterbirth (page 1, column 1, line 2)

1up! is a passive item.

Effects[edit | edit source]

  • Isaac gains an extra life.
    • On resurrection, the mushroom that follows Isaac will disappear and Isaac will respawn in the previous room with all his previous red heart containers at full health.
    • If Isaac has no red heart containers, he'll respawn with 1/2 Soul Heart instead.
  • Added in Afterbirth This item belongs to the Fun Guy
    Fun Guy App.png
  • +1 heart container.
  • set. Collecting three items from this set will transform Isaac into a walking mushroom.

Notes[edit | edit source]

  • It is possible to collect more than one 1up!, resulting in multiple extra lives.
  • Resurrection from 1up! takes priority over all other resurrection items except Guppy's Collar Guppy's CollarGuppy's Collar Icon.pngGrants Isaac a permanent 50% chance to respawn with 1/2 of a red heart after death..
  • ??? will respawn with 3 soul hearts.
  • Keeper will respawn with half a soul heart, which is the only way to have soul hearts on this character. This is an undesirable situation, as you won't be have any heart containers and won't be able to collect more soul or black hearts.

In-game Footage[edit | edit source]

Seeds[edit | edit source]

 PC  LDPB D0QG (X-Ray Vision X-Ray VisionX-Ray Vision Icon.pngReveals and opens all Secret Room and Super Secret Room entrances. adjacent to spawn, first secret room to left from spawn, unless you have Forget Me Now Forget Me NowForget Me Now Icon.pngOne time useWhen activated, the level ends and is freshly regenerated with new rooms, monsters, and items. Disappears after use. unlocked)

 PS4   PC  Normal mode only CWSQ TNM8 (first secret room right from spawn)

Trivia[edit | edit source]

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

The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
MainPageAchievements.png Achievements MainPageAttributes.png Attributes MainPageBosses.png Bosses TarotCard.png Cards and Runes MainPageChallenges.png Challenges MainPageChapters.png Chapters
Isaac App.png Characters MainPageBabies.png Co-op MainPageItems Small.png Items Item Pools Item Pools MainPageMonsters.png Monsters MainPageObjects.png Objects
Red heart.png Pickups BlueBlue.png Pills MainPageRooms.png Rooms MainPageSeeds2.png Seeds Guppy App.png Transformations The Left Hand Icon.png Trinkets