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Type Boss
Environment SurfaceNight
AI Type Motherboard AI
Damage 30 / 40
Max Life 45000 / 56250
Defense 70
KB Resist 100%
Coins 75 Silver Coin
Item (Quantity) Rate
Treasure Bag (Motherboard).png Treasure Bag (Motherboard)
Mechanical Wagon Piece.png Mechanical Wagon Piece
Soul of Plight.png Soul of Plight
• 20-40
Hallowed Bar.png Hallowed Bar
• 10-35
Motherboard Mask.png Motherboard Mask
Motherboard Trophy.png Motherboard Trophy
Carbon Steel.png Carbon Steel
• 6-12
100% (if in Tremode, otherwise 50%)
Bender Legs.png Bender Legs
Flask Core.png Flask Core

The Motherboard is an upgraded version of the Brain of Cthulhu in Hardmode.

Minimap Icon
Motherboard Head Boss.png

Spawn[edit | edit source]

The Motherboard doesn't spawn on it's own. The only way to summon it is to use Mechanical Brain. It can be summoned anywhere at night.

Behavior[edit | edit source]

The Motherboard can fly, shoots Necromancer beams and disappears like Brain of Cthulhu.

Attacks[edit | edit source]

Phase 1[edit | edit source]

  • The Motherboard is invulnerable during this phase. The only way to deal damage to it is to kill all of their Signal Drones which puts them into their second phase.
  • The Motherboard will constantly spawn in new Signal Drones to replace destroyed ones. Try to kill all the drones at once to defeat the Motherboard easily.
    • Signal Drones only attack is to connect with other Signal drones via a purple beam, they only pose a threat to Melee players.
  • The Motherboard occasionally shoots 3 Necromancer beams at the player.
    • You must get it to Phase 2 as soon as possible; the beam is extremely accurate and undodgeable.

Phase 2[edit | edit source]

  • Once all of the Signal drones have been destroyed, the Motherboard will enter it's second phase.
  • 4 Clampers will be spawned as tendrils from the Motherboard, they don't attack aggressively and only follow the motherboard.
    • Clampers deal damage even from their wire so try to stay above the Motherboard to reduce damage taken.
  • Once all of the Clampers have been destroyed, The Mothership will deploy 2 loose Clampers with significantly reduced health, which will fly at players like demon eyes.
  • It will now teleport randomly near the players similar to the Brain of Cthulhu.

Summons[edit | edit source]

Signal Drone
Signal Drone.png
Type Enemy
AI Type Plant AI
Damage 100
Max Life 2000
Defense 50
KB Resist 100%

Interesting Facts[edit | edit source]

  • The Motherboard Boss and attacks came from suggestions made by Zoomo

Notes[edit | edit source]

  • You have until dawn to defeat it. If not killed when daytime arrives, the Motherboard will enter into rage mode and receive an insane speed buff and instantly kill any player she comes into contact with.
  • A current bug with the Clampers is they may have increased health from designated totals. EX: 6430/2400.

History[edit | edit source]

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