Mega Blast

Effects

• 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 backward 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:
    • Open chests.
    • Pick up a Little Battery, collectibles, pills, trinkets, or cards or runes.
    • Pick up the trophy or enter the chest that spawns after defeating Isaac, ??? Satan, The Lamb, Mega Satan (sometimes), or Delirium.
    • Sleep in a bed.
  • The laser extinguishes fires, detonates TNT, and destroys poop.

Notes

• (Removed in Repentance) 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.
  • (Added in Afterbirth † / Removed in Repentance) A Charged Key will only add 3 charges as well.
    • (Added in Repentance) Little Batteries and Charged Keys add 6 charges instead of 3.
  • (Added in Repentance) Picking up a Mega Battery will fully charge it twice.
• 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.
• To unlock Mega Blast, Mega Satan must be defeated with all 13 characters.
  • (Added in Afterbirth †) Requires defeating Mega Satan as all 15 characters (Now including (Apollyon) Apollyon and (The Forgotten) The Forgotten).
    • (Added in Repentance) Requires defeating Mega Satan as all 17 non-tainted characters. (Now including (Bethany) Bethany and (Jacob and Esau) Jacob and Esau)
• (Added in Repentance) It is not recommended to use Mega Blast in fight with The Beast, because its beam forces you into obstacles on the level.

Synergies

All synergies and interactions pertaining to Brimstone pertain to Mega Blast, with the following exceptions and additions:

• (Added in Repentance) 4.5 Volt: Item will gain charges for dealing damage, which is especially effective when fighting bosses with large health pool.
• (Added in Repentance) Book of Virtues: Spawns red wisps on the middle ring that utilize a miniature Brimstone as their weapon, which requires charging and releasing as usual. Lasers can hit up to 8 times for a total of 20 damage. If Mega Blast is being used, the wisps will continuously fire their laser outward rather than in the direction Mega Blast is firing.
• (Added in Afterbirth †) Schoolbag: Beam will continue to fire when switching to another active item. Other active items can be used while the beam is firing.

Interactions

• (Added in Afterbirth †) Angelic Prism: The beam does not split.
• Anti-Gravity: No effect.
• Car Battery: No effect.
• (Added in Afterbirth †)(Hairpin) Hairpin / (Added in Repentance) Sol: Only grants 3 charges.
• Incubus: Familiar fires normal tears while Mega Blast is in use.