Buttons

Obstacles

Rocks

Poops

Fire Places

Cobwebs

TNT

Spikes

Blocks

Buttons

Dirt Patches

Teleporters

Buttons, originally cut content in The Binding of Isaac: Rebirth, have become a full-fledged feature of The Binding of Isaac: Afterbirth.

Silver Buttons

Silver Buttons appear in trap rooms, which have hazards in them which disarm upon pressing all of the silver buttons in the room. Hazards include:

• Spikes
• Retractable Spikes
• TNT
• Troll Bombs
• Megatroll Bombs
• Stone Grimaces
• Vomit Grimaces
• Constant Stone Shooters
• Gaping Maws
• Broken Gaping Maws
• Brimstone Heads
• Cross Stone Shooters
• Quake Grimaces
• Pokies
• Wall Huggers
• Slides
• Grudges
• Spikeballs
• Red Poop
• Red Fire Places
• Purple Fire Places
• Pitfalls

Once pressed, all the hazards will be disarmed - spikes will retract, Red Poop will transform into regular Poop, Red Fire Places will turn into regular Fire Places, Purple Fire Places will turn into Blue Fire Places, and Pitfalls will close.

Unlike Reward Plates, all Silver Buttons in the room have to be pressed to clear the room even if all enemies are slain.

Bug!	In trap rooms with retracting spikes, pressing the silver button within five frames of the spikes deploying will cause them to appear to fail to retract, but this is only a visual bug, and they will not deal damage. This can be fixed by leaving the room and re-entering.

Red Buttons

Red Buttons usually appear in normal rooms.

Once pressed, all the enemies will be killed.

Yellow Buttons

Yellow Buttons only appear in the second Mines or Ashpit floor, and are square-shaped.

Pressing all the yellow buttons unlocks the bridge to Knife Piece 2.

Brown Buttons

Brown Buttons cause certain pits (varies from room to room) to be filled so they can be walked on. Sometimes it clears rocks instead.

Reward Plates (Spawn Buttons)

Reward Plates can appear in a variety of rooms, including Secret Rooms, Curse Rooms, and Shops in Greed mode. When pressed, they may spawn helpful pickups or harmful enemies.

Possible Spawns

Afterbirth

This list is currently incomplete.

• 1-3 random Bomb, Heart, Coin, or Key pickups
• A Donation Machine
• A Beggar
• A Slot Machine
• A Fortune Telling Machine
• 1-3 monsters or bosses in front of each exit of the room
• A trapdoor to the next floor
• Golden poop
• An item

Afterbirth †

There is a 50-50 chance to spawn a reward or a monster.

Rewards

Reward	Chance
Trap Door	5%
Gold Poop	5%
Poop	1%
An item from the current pool	1%
1-3 Coins	28%
1-2 Red Hearts	20%
1-2 Bombs	20%
Chest	2.5%
Locked Chest	2.5%
Bomb Chest	2.5%
Red Chest	2.5%
Slot Machine	2.5%
Fortune Telling Machine	2.5%
Donation Machine	5%
Troll Bomb	10%

Monsters

1-4 monsters or bosses. The Void spawns monsters and bosses based on the room's backdrop.

The Basement

Entity	ID	Description
Horf	12.0	Stationary enemy that fires a medium-ranged blood shot at Isaac when he gets in range of them.
Attack Fly	18.0	Red fly that follows Isaac and deals touch damage.
Charger	23.0	Slowly moves around the room, charging at Isaac when he gets in its line of sight.
Spider	85.0	Erratically moves towards Isaac and deals touch damage.
Ring Fly	222.0	Gathers with any other Ring Flies in the room. These flies orbit around themselves while following Isaac.
Dart Fly	256.0	Flies towards Isaac and attempts to mimic his movements. Deals contact damage.

The Caves

Entity	ID	Description
Hive	22.0	Walks around the room, avoiding Isaac while spawning Attack Flies. Spawns a large number of flies upon death, which can be Flies, Attack Flies or Pooters.
Charger	23.0	Slowly moves around the room, charging at Isaac when he gets in its line of sight.
Boom Fly	25.0	Flies around the room diagonally, dealing touch damage and exploding upon death.
Maw	26.0	Slowly floats towards Isaac, firing blood shots at him when he is in their range.
Nest	205.0	Walks around the room, avoiding Isaac while spawning Spiders. Spawns a Big Spider or a Trite upon death.
One Tooth	234.0	Follows Isaac and periodically dashes towards him when it gets close. Deals contact damage.

The Depths

Entity	ID	Description
Globin	24.0	Chases Isaac, dealing a full heart of contact damage. Upon taking enough damage, it collapses into a pile of goo, which can be killed. Will regenerate after a short period of time if not killed quickly.
Baby	38.0	Slowly floats towards Isaac and fires a blood shot at him. Occasionally teleports and reappears elsewhere.
Knight	41.0	Moves erratically around the room and charges towards Isaac when in line of sight. Can only be damaged from behind.
Fat Sack	209.0	Slowly walks towards Isaac. Occasionally leaps off-screen and attempts to land on Isaac, leaving a puddle of Red Creep and shooting 6 blood shots in all directions where it lands. Has a chance to turn into a Blubber or Half Sack upon death.
Bony	227.0	Wanders around the room and throws a bone at Isaac when he is in sight.
Gurglings	237.1

The Womb

Entity	ID	Description
Lump	56.0	Fires 3 spread blood shots at Isaac when he gets in its line of sight. Will burrow underground and reappear elsewhere after firing.
MemBrain	57.0	Slowly moves around the room, occasionally hopping and firing 8 large blood shots in all directions. Splits into 2 Brains upon death.
Mom's Hand	213.0	Falls from the ceiling. If it lands on Isaac, it deals damage and teleports the player back to the spawn room of the floor. Entering a room containing Mom's Hand will warn the player with Mom's laugh.
Dinga	223.0	Slowly moves around the room, occasionally hopping to spawn Dips or fire 8 Brown shots in all directions. Splits 2 Squirts upon death.

???

Entity	ID	Description
Drowned Charger	23.1	Slowly moves around the room, charging at Isaac when he gets in its line of sight. Explodes into four blood shots in the ordinal directions upon death.
Blue Conjoined Fatty	257.1	Slowly walks towards Isaac and occasionally farts out a homing Ipecac shot at Isaac.

Sheol

Entity	ID	Description
Greed	50.0
Little Horn	404.0
Rag Man	405.0

Cathedral

Entity	ID	Description
Monstro	20.0
The Duke of Flies	67.0
Gemini	79.0

Dark Room

Entity	ID	Description
Little Horn	404.0

The Chest

Entity	ID	Description
Monstro	20.0
Super Envy	51.1

Notes

• A Reward Plate may spawn a trapdoor even in The Chest. If that happens and Isaac enters them, the floor is restarted as with Forget Me Now or 5-pip Dice Room.
• If it spawns enemies, the doors to the room will not close, allowing Isaac to avoid fighting them.
  • It may be worth fighting Sins as they still drop items on death.
  • This was changed in Booster Pack #5. If it spawns enemies then the doors will close. The enemies will remain in the room even after escaping via teleportation or bombing out.
• When enemies are spawned, they appear only at walls with doors (barring an I AM ERROR room where the locations are random). This may help locating Secret Rooms as their secret doors also count.
• Different enemies may spawn from the buttons depending on the floor, with difficult enemies such as Bosses being spawned on later floors.
• Donation Machines spawned in Greed mode will be regular Donation Machines and not Greed Donation Machines.