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The Nuclear Throne is the boss of the Palace and currently the final boss of the game.

As you approach the end of the throne room (7-3) walking on a long red carpet, you reach a huge throne with a skeleton sitting on it. You cannot walk up the stairs to sit on it yourself. Attempting to shoot the throne will destroy the skeleton. The room starts to shake and the music changes as the Throne boss enters its first attack phase. Beating the Throne will end your run unless you loop the game.

PhasesEdit

Beam Phase

The large cannon in the center of the Throne fires out a beam of laser. After the first beam phase the throne transforms, grows legs and begins to move in your direction a little at a time. It deals 10 damage on contact. It will cycle randomly through moving, and Beam, Orb, or Tri-shot phases over time.
Walking on the red carpet during the fight can trigger the boss to fire its beam.
Walking away from the boss triggers it to move towards you. As it comes in contact with the Throne Statue props, it will break them. Each statue spawns a Guardian that will try to kill your character.

Orb Phase

The Throne fires 2 large green orbs which, in turn, explode into 7 lines of 4 smaller orbs each. This is the main attack of the Throne, and is fired toward the player. The large orbs have a high chance to drop mini ammo/health pickups. Each smaller orb deals 5 damage on contact. The large ones instantly spawn the small ones upon hit, dealing 8 damage. Large orbs will break the Throne Statues which spawn Guardians.

Tri-shot phase

The Throne fires a triple bullet shot from 2 mounted turrets. Each row has 8 green bullets. In total, it fires 48 large bullets in the general direction of the player and will often repeat this attack, each time changing it's direction. Each green bullet deals 2 damage on contact.

Death Phase

Upon death the Throne explodes into multiple small and then one large explosion. The massive blast consists mostly of big green explosions which deal 12-24 damage each.
After defeating the throne you will see the game's ending.


Destroying all four Large Generator props during the boss fight removes half of the Throne's remaining HP and guarantees that a Loop Portal opens after the Throne is defeated. By entering that portal you will skip the ending and loop the game. You will return to the place where you pick your character - The Campfire (area 0-1). Each Large Generator has 230HP.
Throne deactivated

Loop Version

Each loop adds more projectiles to the Throne's attacks. Large orbs will split into one more row of smaller orbs after each loop. The tri-shot bullet attack gains one additional bullets for each row per loop which also makes it last longer.

Each Throne Statue will spawn an additional Guardian per loop.

Each Large Generator has 50HP on loops instead of 230HP. Destroying all Large Generators on a loop doesn't affect the Throne's HP.

TriviaEdit

  • It's possible to get behind the Throne during the fight. It will still shoot at you though, and it can walk and fire large orbs backwards.
  • This boss was added in update #33.
  • Throne Statues were added in update #82.
  • Large Generators were added in update #91.
  • The Nuclear Throne boss theme is "Nuclear Throne".
  • When you die to the Throne the death screen message "You did not reach the Nuclear Throne" changes to "You almost reached the Nuclear Throne". The message changes to "You reached the Nuclear Throne" upon defeating the Throne and sitting on it which ends your run. If you die after looping the game the death message changes to "The Struggle Continues".
Boss The Throne

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