Booster Packs

This article is about the Afterbirth † content updates. For the passive item, see Booster Pack (Item).
**Booster Packs** were recurring content updates for *The Binding of Isaac: Afterbirth †*. Booster Packs contained popular community-developed mods as updates in the game continued to add features.

## Booster Pack #1

The first Booster Pack was released on March 23, 2017 on PC, and contains 9 new items, 3 new trinkets, and 3 new special cards, along with some new features.

### Active Items

 Mystery Gift | 5.100.515
 Sprinkler | 5.100.516

### Trinkets

 Hairpin | 5.350.120
 Wooden Cross | 5.350.121

### Cards

 Ancient Recall | 5.300.53
 Era Walk | 5.300.54

### Other Features

* Dice Rooms now have a small icon in the corner of the room that denotes what the effect of the room is, inspired by this Steam Workshop mod.
* Added a new option in the menu to display charge bars, based on this Steam Workshop mod.
* Added 5 new Eden hairstyles, based on this Steam Workshop mod.

## Booster Pack #2

The second Booster Pack was released on May 12, 2017 on PC, and contains 6 new items, 1 new trinket, and miscellaneous changes.

### Active Items

 Moving Box | 5.100.523
 Telekinesis | 5.100.522

### Passive Items

 Leprosy | 5.100.525
 Technology Zero | 5.100.524

### Other Features

* Angel Rooms were rebalanced - they contain more items but only a single one can be collected.
* Mods no longer disable achievements after beating Mom once. This includes the use of the Debug Console.
* Active items now charge during Challenge Room waves.
* Multiple items that affect the appearance of bombs now stack visually, based on this Steam Workshop mod.
* now changes appearance depending on how many flies are in the jar, based on this Steam Workshop mod.
* Added Mom's Dressing Table, which changes Isaac's appearance to only reflect a few of his items, based on this Steam Workshop mod.
* Added the Stompy transformation.

## Booster Pack #3

The third Booster Pack was released on June 30, 2017, for the PC, and contains 4 new items, and 1 trinket.

### Passive Items

 Angelic Prism | 5.100.528
 Pop! | 5.100.529

### Other Features

* Added new Eden hairstyles, based on this Steam Workshop mod.

## Booster Pack #4

The fourth Booster Pack was released on October 10, 2017 and contains 5 new items, 1 new trinket, and 6 new enemies.

### Monsters

 Cross Stone Shooter | 202.10
 Tube Worm | 244.1
 Tar Boy | 307.0
 Fistuloid | 308.0
 Gush | 309.0

### Other Features

* Most items from previous Booster Packs have new and improved graphics.
	+ collectible sprite was changed.
	+ collectible and costume sprites were changed.
	+ collectible and familiar sprites were changed.
	+ collectible and entity sprites were changed.
	+ collectible and familiar sprites were changed. Familiar sprites were based on this Steam Workshop mod by Quartz.
	+ collectible sprite was changed.
	+ trinket sprite was changed.
	+ trinket sprite was changed.
	+ trinket sprite was changed.
* Added 400 new rooms to better integrate the Afterbirth+ enemies (including Booster Pack #4 enemies) into the game.

## Booster Pack #5

The fifth and last Booster Pack was released on April 30, 2018 and contains 1 new character, 18 new items, 3 new trinkets, 7 new enemies, and a new boss.

### Characters

The Forgotten is a new character added in the Booster pack.

### Trinkets

 Finger Bone | 5.350.128
 Rotten Penny | 5.350.126

### Other features

* Bone Hearts, a new heart-type.
* Golden Bombs now have a pickup sound effect.
* Black Hearts now have a pickup sound effect.
* White Poop, a new poop type.
* Gaping Maws supposedly have a chance to become Broken Gaping Maws, although this never actually happens ingame.
* Changes to Greed mode Angel Rooms.
* Added 817 new rooms.
* New charge bar graphics.
* New and improved graphics based on this Steam Workshop mod.
* New and improved graphics for burrowing monsters based on this Steam Workshop mod.
* Added the unlocks from the Switch version of the game.
* Added 64 new achievements, including 36 from the Switch version.
* Added 43 new Co-op Babies, 41 being cosmetic and two unlockables (Bone Baby and Bound Baby).

## Gallery

* Concept Art For Cells, Fused Cells, and Tissues, scrapped Booster Pack enemies by LeatherIceCream.

## Trivia

* Booster Pack 3 is the only booster pack to not be featured on a blog post.
* The developers of Antibirth helped create booster packs 4 and 5.
* Many of the added Co-op Babies from Booster Pack 5 are references to popular mods that were never added in the Booster Packs.

## References

1. ↑ Booster Tutor!
2. ↑ Booster Rooster #2!
3. ↑ Booster Pack 4 You!
4. ↑ The Forgotten Booster!
5. ↑ *"i believe more broken maw rooms were added and possibly the chance for normal ones to become broken ones"*