1up! is a familiar in The Binding of Isaac.

+1 extra life.

Grants a familiar that follows Isaac.

Respawns Isaac with full health in the previous room, or half a soul heart if he has no red heart containers.

The item is removed from Isaac's inventory after it respawns Isaac.

This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.

This item contributes towards the Fun Guy transformation. Collecting 3 items from this set will give Isaac +1 full red heart container.

1up! can be found in the following item pools:

The following tags are applied to this item:

Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.

1up!

• Grants 1 extra life
• Abyss: x1 locust 1x Isaac's damage

• Check out the item description on the external Isaac Wiki.