Firestorm Cannon

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Firestorm Cannon
  • Firestorm Cannon.png
Stack digit 1.png
TypeWeaponCrafting material
Damage10 Ranged
Knockback1.5 (Extremely Weak)
Critical chance4%
Use time20 Average
TooltipReleases an constant stream of weaponized flares
Press Right Click to fire a condensed spread of flares
70% chance to save ammo
RarityRarity Level: 2
Sell 40 Silver Coin.png
Research1 required
Not to be confused with Flurrystorm Cannon, a snow-themed ranged weapon.

The Firestorm Cannon is a craftable Pre-Hardmode ranged weapon that is a weaponized version of the Flare Gun. Like the Flare Gun, it uses Flares as ammunition.

The Firestorm Cannon has two firing modes, both of which have auto-use:

  • Left click will fire a constant but inaccurate stream of piercing flares, with a 50% chance to fire two flares at once. These flares disappear very quickly after sticking to a tile.
  • Right click fires an inaccurate spread of four flares, with a 50% chance to fire five flares. These flares do not pierce but travel twice as fast and last longer when sticking to tiles.

Its best modifier is Unreal.

Both attacks, left then right click.



Crafting Station
Iron AnvilIron Anvil
Lead AnvilLead Anvil
Flare GunFlare Gun1
Hellstone BarHellstone Bar10
Firestorm CannonFirestorm Cannon1

Used in


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
    • Buffed damage from 10 to 14 and use time from 20 to 12.
    • Secondary fire no longer deals 40% more damage.
    • Now uses 10 Hellstone Bars in its recipe instead of a Boomstick, 10 Gold Bars, and 10 Pearl Shards.
  • No longer considered a fire weapon.
    • Nerfed damage from 18 to 9.
    • Capped primary fire's pierce at three.
    • Decreased secondary fire's damage boost from 60% to 40%.
    • Buffed damage from 11 to 18.
    • Primary fire flares now deal 100% base damage instead of 85%, and alt fire flares now deal 75% damage instead of 100%.
  • Primary fire's flares now deal 85% base damage instead of 85.000002384185791%.
  • Now makes the Merchant sell Flares if in the player's inventory.
    • Nerfed damage from 14 to 12.
    • Now uses 10 Victory Shards in its recipe.
  • Nerfed alt fire's use time from 22 to 26.
    • Buffed damage from 12 to 14.
    • Now has a right click ability that fires bursts of flares.