Mega Blast

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Font TeamMeat M.pngFont TeamMeat e.pngFont TeamMeat g.pngFont TeamMeat a.png   Font TeamMeat B.pngFont TeamMeat l.pngFont TeamMeat a.pngFont TeamMeat s.pngFont TeamMeat t.png
Item icon
Item altar
Character appearance
12 rooms 12 rooms
Item Pool Devil Room.png Devil Room
Greed mode onlyItem Pool Devil Room.png Devil Room
(page 4, column 16, line 4)
Mega Defeat Mega Satan as every character
Added in Afterbirth

Mega Blast is a secret unlockable activated item added in Afterbirth.

Effects[edit | edit source]

  • Upon use, Isaac fires a giant, incredibly powerful blood laser, similar to the one used by Mega Satan, for 15 seconds.
    • The beam deals Isaac's current damage multiplied by 5 per tick.
    • The beam has enough power to push Isaac backwards while being fired, and will last between rooms, and across multiple floors.
    • The beam has spectral and piercing effects.
    • The beam can be moved while firing in many angles diagonally.
    • While Mega Blast is being fired, Isaac cannot:
    • The laser extinguishes fires, detonates TNT, and destroys poop.

Notes[edit | edit source]

  • Picking up a Little Battery with this item will not fully charge it. Instead, it will add 3 to its charge, meaning that 4 batteries are required to fully recharge the item.
  • Using a 48 Hour Energy pill with this item will fully charge it.
  • Mega Blast has an 80% decreased item pool weight, making it less likely to appear than other collectibles.
  • In order to unlock Mega Blast, Mega Satan must be defeated with all characters including secret characters (The Forgotten, The Lost and, Keeper).

Synergies[edit | edit source]

  • 9 Volt 9 Volt
    9 Volt Icon.pngReduces the charge of any Activated Items by 1. Any 1 charge items instead have timed recharges.
    : Reduces number of charges by 1.
  • Added in Afterbirth † Euthanasia Euthanasia
    Euthanasia Icon.pngAdds a chance to fire needles. If a needle kills an enemy, it bursts into more needles.
    : Adds a chance for beams to fire with triple damage.
  • Homing Tears: Beam curves toward nearby enemies.
  • A Lump of Coal A Lump of Coal
    A Lump of Coal Icon.pngThe more distance tears travel, the more damage they will do.
    : Increases the damage of the laser the farther that it travels. Also colors the laser black and makes it wider as it travels.
  • Ipecac Ipecac
    Ipecac Icon.pngReplaces tears with explosive and poisoning projectiles fired in an arc from the mouth.
    : Massively increases damage, poisons enemies, and turns the beam dark red.
  • Polyphemus Polyphemus
    Polyphemus Icon.pngMakes Isaac shoot one huge tear. Also reduces Tears to minimum. Damage increased . If tear does more damage than an enemy's life, the tear continues to travel with the extra remaining damage.
    : Quadruples beam's damage.
  • Rubber Cement Rubber Cement
    Rubber Cement Icon.pngTears bounce off walls, enemies, and environmental objects.
    : Beam bounces off walls like Brimstone Brimstone
    Brimstone Icon.pngTears are replaced by a laser beam that pierces through all enemies and obstacles in its path and deals high damage. Can only be fired after a short charge-up period.
  • Added in Afterbirth † Schoolbag Schoolbag
    Schoolbag Icon.pngAllows Isaac to hold two active items.
    : Beam will continue to fire when switching to another active item. Other active item can be used while beam is firing.
  • Tiny Planet Tiny Planet
    Tiny Planet Icon.pngRange up and makes shot tears revolve around Isaac until they drop.
    : Beam rotates around the player like Brimstone would.
  • Added in Afterbirth † Void Void
    Void Icon.png6 roomsConsumes all pedestal items in the room. Active items will have their effects added to Void, and passive items will grant stat upgrades.
    : Allows the item to be used every 6 rooms instead of 12 and batteries will fully charge the item.

Interactions[edit | edit source]

  • 20/20 20/20
    20 20 Icon.pngGrants double shot.
    /The Inner Eye The Inner Eye
    The Inner Eye Icon.pngGrants triple shot but decreases tears.
    /Mutant Spider Mutant Spider
    Mutant Spider Icon.pngGrants quadruple shot but decreases tears.
    : No effect on Mega Blast.
  • Added in Afterbirth † Angelic Prism Angelic Prism
    Angelic Prism Icon.pngGrants a prism orbital with a large orbital radius. Tears that pass through the prism split into four multi-colored tears.
    : Laser beam will only split and change color when Isaac is directly against a wall.
  • Anti-Gravity Anti-Gravity
    Anti-Gravity Icon.png-2 Tear Delay. Tears float in position until firing ceases, after which they will fly off in the direction they were shot in.
    : No effect on Mega Blast.
  • Car Battery Car Battery
    Car Battery Icon.pngCauses Isaac's activated item to activate twice on each use.
    : No effect.
  • Chocolate Milk Chocolate Milk
    Chocolate Milk Icon.pngGrants charged tears that deal greater damage when fully charged.
    : No effect on Mega Blast. Laser beams turn a light brown color.
  • Added in Afterbirth † Compound Fracture Compound Fracture
    Compound Fracture Icon.pngIncreases range. Tears turn into bones, which shatter into 1-3 bone shards upon hitting an enemy or obstacle.
    /Cricket's Body Cricket's Body
    Cricket's Body Icon.pngGrants -1 Tear Delay and reduces Range. When tears hit an object or deplete their range, they spawn 4 smaller tears, whose Range and Damage scale with Isaac's.
    /The Parasite The Parasite
    The Parasite Icon.pngIsaac's tears split in two when they hit something.
    : No effect on Mega Blast.
  • Continuum Continuum
    Continuum Icon.png+2.25 Range Up. +1.5 Tear Height. Isaac's tears travel through walls and appear out of the opposite wall. Isaac's tears also travel over rocks and objects.
    : No effect on Mega Blast.
  • Dr. Fetus Dr. Fetus
    Dr. Fetus Icon.pngTears are replaced by bombs that benefit from bomb-enhancing effects and slide a fixed range after being fired.
    : No effect.
  • Epic Fetus Epic Fetus
    Epic Fetus Icon.pngIsaac's tears are replaced with guided missiles, like those used by the Doctor's Remote.
    : No effect.
  • Godhead Godhead
    Godhead Icon.pngIncreases damage and range while reducing tears and shot speed. Grants homing tears and tears gain a damaging halo.
    : Multiplies beam damage by 1.2, retains homing effect. The beam does not have a damaging aura.
  • Added in Afterbirth † Haemolacria Haemolacria
    Haemolacria Icon.pngTears are now fired in an arc. Upon hitting the floor, an obstacle, or an enemy, they burst into many smaller tears in all directions. Increases tear delay.
    : Multiplies beam damage by 1.3. No other effects.
  • Incubus Incubus
    Incubus Icon.pngA demonic familiar that follows Isaac and shoots tears identical to Isaac's in terms of damage, range, fire rate, and effects.
    : Familiar fires normal tears while Mega Blast is in use.
  • The Ludovico Technique The Ludovico Technique
    The Ludovico Technique Icon.pngInstead of firing tears, Isaac controls one floating tear that hover over obstacles. This tear deals constant damage when held in place over an enemy.
    : No effect.
  • Mom's Eye Mom's Eye
    Mom's Eye Icon.pngAllows Isaac to fire tears from the back of his head.
    /Loki's Horns Loki's Horns
    Loki's Horns Icon.pngGives a random chance for projectiles to fire in all 4 cardinal directions.
    : Will not fire other beams even with high luck.
  • Mom's Knife Mom's Knife
    Mom's Knife Icon.pngIsaac's tears are replaced by a knife that pierces enemies, can travel through obstacles, and can hurt enemies while Isaac is holding it. Holding down the fire button before firing increases its range and power.
    : No effect.
  • Monstro's Lung Monstro's Lung
    Monstro's Lung Icon.pngIncreases damage and grants a charged shot that fires multiple tears in the same fashion as Monstro.
    : No effect.
  • My Reflection My Reflection
    My Reflection Icon.pngGives Isaac's tears a boomerang effect, and increases range and shot speed.
    : Causes the beam to curve while moving.
  • Proptosis Proptosis
    Proptosis Icon.pngTears start out massive with high damage, and then shrink down and become weaker over a short range.
    : The beam does massively increased damage at close range but does nearly no damage from afar.
  • Sharp Plug Sharp Plug
    Sharp Plug Icon.pngUsing an activated item while it's not charged will charge it and Sharp Plug does 2 full heart damage to Isaac.
    : Fully recharges the item upon use at the cost of 2 hearts.
  • Soy Milk Soy Milk
    Soy Milk Icon.pngTears shrink and do much less damage, but fire in very rapid succession.
    : Reduces beam's damage to Isaac's base damage.
  • Technology Technology
    Technology Icon.pngReplaces tears with a piercing laser with unlimited range.
    : No effect.
  • Technology 2 Technology 2
    Technology 2 Icon.pngDecreases damage and replaces right eye tears with a unlimited range, piercing laser which fires continuously.
    : Decreases beam's damage.
  • Tech X Tech X
    Tech X Icon.pngTears are replaced with laser rings that pierce through enemies and deal damage to enemies within them. Can be charged to increase the size of the ring.
    : No effect.
  • Added in Afterbirth † Trisagion Trisagion
    Trisagion Icon.pngTears are replaced with piercing white blasts of light.
    : No effect on Mega Blast.

In-game Footage[edit | edit source]

Seeds[edit | edit source]

 PC  WCB1 YZ39 (First floor Devil Room)

 PC  TQWA 6TQD (Curse room adjacent to spawn, chest teleports to devil deal) Normal and hard modes only

 PC  3KY4 LSVL (Second floor Devil Room)

 PC  RZL2 6MQ0 (Starting item as Eden, and will also start with Godhead Godhead
Godhead Icon.pngIncreases damage and range while reducing tears and shot speed. Grants homing tears and tears gain a damaging halo.

 PC  MKNJ 711R (Third floor Devil Room)

 PC  W3BZ BBB2 (Starting item as Eden) Greed mode only

 PC  PGH7 BMRT (Starting item as Eden) Greed mode only

 PC  L6B9 ZZ22 (Starting item as Eden) Hard mode only

 PC  NZ7T 4RAJ (Starting item as Eden) Hard mode only

Gallery[edit | edit source]

The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
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