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Terraria Wiki
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Desktop/Console/Mobile/Switch/tModLoader-Only Content: This information applies only to the Desktop, Console, Mobile, Switch, and tModLoader versions of Terraria.
First Fractal.png
Unobtainable on the Old-gen console version Old-gen console version and Nintendo 3DSNintendo 3DS version version
The item(s) or effects described on this page exist as functional game items, but on the Old-gen console version Old-gen console version and Nintendo 3DSNintendo 3DS version version, cannot be acquired through normal gameplay.
  • S.D.M.G. item spriteold S.D.M.G. item sprite
Stack digit 1.png
Uses ammoBullets
Damage85 / 77 / 35 (Ranged)
Knockback2.5 (Very weak)
Critical chance14% /
Use time5 (Insanely fast) /
6 (Insanely fast)
Tooltip66% chance to not consume ammo
'It came from the edge of space'
RarityRarity level: 10 /
Rarity level: 8
Research1 required
Obtained from Obtained from Obtained from
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
Moon LordMoon Lord's Head.gifMoon Lord111.1%
Treasure Bag
(Moon Lord)
Treasure Bag (Moon Lord)Treasure Bag
(Moon Lord)

Animation of the S.D.M.G.

The S.D.M.G. (Space Dolphin Machine Gun) is a Hardmode, post-Moon Lord gun. It can be considered an endgame upgrade of the Megashark, with a slightly faster firing rate, a 66% / 50% chance not to consume ammunition, and a noticeably higher damage output. Its abilities are also similar to those of the Chain Gun, but it is more precise and deals significantly more damage, though with a slightly slower rate of fire. It has a 11.11*1/9 (11.11%) chance to be dropped by the Moon Lord.

Its best modifier is Unreal.



  • The S.D.M.G. pairs well with certain types of bullets:
    • The Luminite Bullets' piercing capabilities complement the S.D.M.G.'s high rate of fire and accuracy for crowd control.
    • Using Ichor Bullets is a cheap and powerful alternative to Luminite Bullets. The base damage of 13 in addition to the Ichor debuff makes it a great weapon against powerful enemies such as bosses.
    • The high accuracy of the gun allows for the shards of Crystal Bullets to consistently hit large enemies.
    • The Chlorophyte Bullets' homing abilities make it easier to hit small targets or dangerous enemies. Additionally, the S.D.M.G.'s ammo conservation helps to conserve resources, because crafting Chlorophyte Bullets is rather costly.
  • The stealth mode of the Vortex armor increases the S.D.M.G.'s damage output even more. It is particularly helpful for taking down the Moon Lord.
  • Compared to the Vortex Beater, the S.D.M.G. is more accurate. It does not fire a homing missile, however.


  • This item is a reference to the game Edge of Space (hence the tooltip 'It came from the edge of space'), in which Terraria is also referenced.
  • This weapon goes along with the theme of aquatic automatic weapons, such as the Gatligator, as well as its predecessors, the Minishark and Megashark.

See also[]

  • S.D.M.G at the Official Edge of Space Wiki.


  • Desktop
    • Damage increased from 77 to 85.
    • Chance not to consume ammo increased from 50% to 66%.
  • Desktop
    • Made obtainable, now drops from Moon Lord.
    • Damage increased from 35 to 77.
    • Critical strike chance increased from 4% to 14%.
    • Use time decreased from 6 to 5.
    • Rarity increased from Yellow to Red.
  • Desktop 1.2: Introduced, but unobtainable without the use of inventory editors, mods, or cheats.