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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.

Phases[]

Beam Phase

The large cannon in the center of the Throne fires out a laser beam. 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 melee damage. 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 orbs cause 12 damage on contact. Large orbs instantly spawn the small orbs upon hit. 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 its direction. Each green bullet deals 2 damage on contact.

Death Phase

Upon death, the Throne explodes into multiple small explosions 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 characterThe Campfire (area 0-1). Each Large Generator has 230 HP.
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 bullet 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 50 HP on loops instead of 230 HP. Destroying all Large Generators on a loop doesn't affect the Throne's HP.


Strategy[]

Fighting the nuclear throne can be tricky because it tends to quickly fill the screen with projectiles, especially due to the two large orbs it fires regularly, in cases where the screen starts to fill with projectiles you need to move down quickly, this will prevent you from being cornered and eaten by bullets, although keep in mind that doing this will also spawn more Guardian to the fight, so it should be done when necessary, having a melee weapon can help avoid these scenarios since you can destroy a lot of projectiles, so it is very useful.

A somewhat risky but very useful way to avoid being suffocated by so many projectiles, is to stay on the carpet and incite the throne to fire its laser beam, you just have to pay attention to the sound it makes when it is about to fire the laser beam to be able to move away from the mat quickly, as while performing this attack the throne will not fire any other projectiles, giving you room to damage it or kill any Guardian that have spawned without having to deal with as many projectiles.

Trivia[]

  • 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".


  • After the end credits, the player will be brought to area HQ3, where Captain can be seen as viewing the player. A bug can occur here if the player has taken Rebel's Personal Guard ultra, as HQ3 is a new level, Rebel's allies will spawn within the room and walk towards the screen displaying Rebel.
The Nuclear Throne
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