Rocket in a Jar

Item Icon
Pickup Quote	"Rocket propulsion +5 bombs"
Entity ID	5.100.583
Item Pool	Bomb Bum Treasure Room Treasure Room
Quality	1
Item Tags
Collection Grid	(page 5, column 19, row 5)

Rocket in a Jar is a passive item added in The Binding of Isaac: Repentance.

Effects

• Adds 5 Bombs.
• If any firing input is given when placing a bomb, a fast-moving, explosive rocket will be shot in the direction corresponding to the input.
  • The rockets accept analog firing input. This means they can be shot diagonally or in any other angle with a mouse or joystick, even without Analog Stick.
  • Isaac will place a regular bomb if no firing input is received.

Notes

• Rockets use Isaac's bomb synergies like his bombs normally would.
• Rockets are unaffected by Isaac's shot speed.
• Rockets can be boosted by Brimstone lasers and Hemoptysis sneezes.
• Bosses such as Chub or Carrion Queen can swallow the rockets just like regular bombs.

Synergies

• Bob's Bladder: Rockets leave creep, albeit slowly.
• Bobby-Bomb: Rockets become homing.
• Dr. Fetus: Shoots rockets as normal tears. All synergies that would normally apply are given to the rockets.
• Giga Bombs: Fires a giant rocket that moves slower and has the same effects as a normal Giga Bomb.
• Ring Cap: Fires two rockets simultaneously.

Interactions

• Best Friend/Bob's Rotten Head/Epic Fetus/Mr. Boom: No effect.
• Blasting Cap: Rockets can drop bomb pickups.
• Marked: Rockets will fly to the location of the crosshair.
• Sticky Bombs: Rockets will not stick onto enemies.
• Remote Detonator: Rockets do not explode on impact with surfaces, requiring manual detonation.
  • Remote Detonator + Dr. Fetus: Rockets fired with Dr. Fetus will still explode on impact, but can be manually detonated.
• Worm trinkets: Rocket's trajectory is unaffected.
  • Wiggle Worm + Dr. Fetus: Rocket will wiggle from side to side mid-flight. This is the only worm trinket that affects Rocket in a Jar.
• My Reflection: No effect.
  • My Reflection + Dr. Fetus: Rockets fired with Dr. Fetus will turn back at Isaac, but will not explode in contact with the player. However, it will explode after a duration, possibly damaging Isaac.

Trivia

• Rocket in a Jar originates from the Antibirth mod.
• Rocket in a Jar resembles a missile tank upgrade from the Nintendo franchise Metroid.

The Binding of Isaac: Rebirth
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