In-game pickup line
“Rocket propulsion +5 bombs”
Mechanics
What Rocket in a Jar does
- Grants five bombs on pickup.
- Placing a bomb while firing sends it forward as a rocket instead of leaving it at Isaac's feet.
From the game files
What you receive on pickup
Pickup grants
- Bombs
- +5
In a run
Practical note
Stop firing to place a normal bomb for a precise wall or rock target.
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.
