Onyx Blaster

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Onyx Blaster
  • Onyx Blaster item sprite
Stack digit 1.png
Uses ammoBullets
Damage24 (Ranged)
Knockback6.5 (Strong)
Critical chance4%
Use time48 (Extremely slow)
Velocity14 (not affected by ammo)
RarityRarity level: 4
Research1 required
Projectile created
  • Onyx Blaster
    Onyx Blaster
The Onyx Blaster in action.

The Onyx Blaster is a Hardmode ranged weapon that fires a spread of 4 bullets while only consuming one unit of ammunition, and a single dark energy projectile that explodes upon impact with an enemy or a block, or after traveling for 0.67 seconds (35 tiles by default; more with higher velocity).[1] The explosive projectile deals 48 base damage, twice the listed damage of the weapon.

The Onyx Blaster is a direct upgrade to the Shotgun. It can be crafted before defeating any of the mechanical bosses.

Its best modifier is Unreal.



ResultIngredientsCrafting station
Onyx BlasterOnyx BlasterMythril AnvilMythril Anvil
Orichalcum AnvilOrichalcum Anvil


  • The Onyx Blaster is a particularly effective weapon for the point in the game at which it can be acquired. Its ingredients are not hard to farm, and it can be used to good effect in much of the early Hardmode content, being an excellent candidate against the mechanical bosses and even being capable of holding its own against later bosses such as the Golem and Duke Fishron.
  • It can one-shot many common Hardmode enemies, and the explosion is particularly devastating against worms, being capable of one-shotting anything up to and including a Dune Splicer or dramatically speed up the fight against The Destroyer. One can further increase its potential by crafting Exploding Bullets.
  • Using a combination of this weapon, the Megashark, and the Endless Musket Pouch could be helpful in maximizing crowd control.


A close up of the onyx blast.
  • Onyx is a mineral commonly found around the world, and the name "Onyx Blaster" might be coming from both the stone and weapon being black.
    • Despite being named Onyx Blaster, no onyx is used to craft the weapon, nor does onyx exist in Terraria.
  • This is one of a small "set" of weapons made with two shards apiece, the other members being the Sky Fracture and the Dao of Pow. Their recipes, names and appearances link the weapons to themes of darkness, light, and balance, with the Onyx Blaster representing darkness. The set also includes one weapon for each of the three "classic" damage types (melee, magic, and ranged), where the Onyx Blaster is the ranged weapon.
  • According to lead developer Yoraiz0r, the design of the Onyx Blaster was directly inspired by the dark, "evil" half of Monokuma, the main antagonist of the Japanese video game series Danganronpa.[2]
  • It is one of two firearms in Terraria to feature an operating secondary weapon, the other being the Vortex Beater.
  • The purple stripes on the Onyx Blaster appear to glow while the weapon is being used.


  • Desktop 1.4.1:
    • Damage decreased from 28 to 24.
    • Use time increased from 45 to 48.


  1. Information taken from the Desktop version Desktop source code, method SetDefaults() in Terraria.Projectile.cs.
  2. Behind the scenes of Journey's End - A Q&A with the Programmers and Artists of Terraria January 22, 2021