Bombs

Pickups

Hearts

Coins

Bombs

Keys

Batteries

Pills

Cards/Runes

Chests

Sacks

Bombs are used to damage enemies, destroy rocks, and open up regular doors and Secret Rooms. When spawned, it can be replaced by a Troll Bomb instead.

Isaac's bombs deal 60 damage to enemies and one full heart of damage to himself.

Isaac's bombs deal 100 damage to enemies. Bomb explosions pierce enemy armor.

Bomb	ID	Image	Worth	Additional Info	Unlocked Method
Bomb	5.40.1		1	Bogo Bombs, Humbling Bundle, and Equality! can replace this with a Double Bomb.
Double Bomb	5.40.2		2	Grants two bombs.
Golden Bomb	5.40.4		∞	Will not add to the player's bomb count, but when picked up, it will give the player unlimited bombs for the duration of the current floor, even if the current number of bombs is 0.	Complete Blue Bomber (challenge #23)
Troll Bomb	5.40.3		0	Cannot be picked up. Spawns already ignited and will explode after a few seconds. Safety Scissors will turn this into a Bomb before it explodes.
Golden Troll Bomb	4.18		0	Similar to troll bombs, spawns already ignited and cannot be picked up. However, it explodes endlessly, similar to unlimited bombs of the golden bomb pickup. Safety Scissors will turn this into a Golden Bomb before it explodes.
Megatroll Bomb	5.40.5		0	Like Troll Bombs, but are bigger (like bombs upgraded with Mr. Mega) and will chase Isaac if they are nearby (as if under the influence of Magneto). Safety Scissors will turn this into a Double Bomb before it explodes.
Giga Bomb	5.40.7		1	Thrown by Bombgaggers and are spawned naturally in some rooms in Ashpit. Explodes and destroys tiles in a diamond shape. Can be obtained by the player with Safety Scissors or Everything Jar.
Throwable Bomb	5.41		0	Can only be picked up and thrown, explodes in a few seconds after pickup. Spawned only by the Bomb Grimace enemy.

Notes

• Troll bombs of all sizes (whether room reward or spawning from monsters) deal a full heart of damage under normal conditions.
• Troll Bombs explode after a random amount of time. This means that if two Troll Bombs spawn at the same time right next to each other, there's a high chance one Troll Bomb will blow up before the other, sending that Troll Bomb sliding outwards a bit before exploding.
• Giga bomb explosions will never destroy tiles in front of room exits.
• The HUD icon for bombs changes to a bigger one when Isaac holds a Giga bomb.
• Picked up Giga bombs are always used before normal bombs.
• Giga bombs deal 300 damage to enemies.
• Picked up Giga bombs will override the Golden bomb effect until all Giga bombs are used and they do not stack with it.

Unlockable Achievements

• 

  It's the Key - Defeat The Lamb without taking hearts, coins, and bombs through an entire run.

Trivia

• Troll Bombs are a reference to Trolling, an internet term for tricking or messing with one psychologically.
  • The faces on Troll Bomb depict the Trollface, a face commonly associated with internet trolls and trolling.
• Megatroll Bombs are spawned by Super Wrath, Super Pride, War (black Champion), and sometimes Little Horn.
• In the original game, Megatroll Bombs can't be blocked by obstacles or non-piercing tears, will follow the player at any distance, and are much faster.