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The weapon aimed at DK Island.

The Blast-O-Matic is a doomsday machine that King K. Rool developed in Donkey Kong 64.


The Blast-O-Matic machine is a laser device with three brass rings surrounding a metal arrowhead pole. This pole retracts into the belly of K. Rool's ship, and is powered by a massive computer in the heart of the ship that draws energy from five Banana Medals.


After his defeat in the events of Donkey Kong Country 3: Dixie Kong's Double Trouble! and Donkey Kong Land 3, King K. Rool plotted to destroy DK Island in retaliation. In the now mechanized Crocodile Isle, which has been turned into a ship in K. Rool's image, he had all possible members of the Kremling Krew work on building the machine, with Snide heading the development. After most of the design is finished, K. Rool becomes paranoid in regards to Snide, and fires him, breaking up the Blueprints of the device and giving them to his Kasplats for safe keeping.

As the machine's development nears completion, Crocodile Isle sets off for DK Island, and though the ship crashes and seemingly loses its mobility, it finds itself positioned perfectly before DK Island. With the machine still unfinished, K. Rool sends his henchmen to steal Donkey Kong's Golden Banana hoard and kidnap his friends, DiddyLankyTiny, and Chunky, scheming to distract him with getting them all back while focusing on finishing the Blast-O-Matic machine.

While he makes every attempt to stop them from succeeding, including sending out his elite henchman Army Dillo, the Kongs make unexpected progress in recovering what was lost to them, to the point where K. Rool begins to feel apprehension about it by the time they reach Frantic Factory. He consults his chief of staff to ask about the progress on the machine, and the nervous Kremling replies that they weren't ready yet, blaming it on his men, who blame him in turn. K. Rool sends Klaptraps to supervise the machine's construction.

K. Rool later learns that by the guidance of a vengeful Snide, the Kongs have been recovering the blueprints to the Blast-O-Matic from his Kasplats. One Kasplat, realizing the danger of the situation, attempts to flee before K. Rool can inflict repercussions...only to find himself face-to-face with a giant red Klaptrap that K. Rool used to execute him.

Foiled Again

The Kongs eventually succeed in reaching Hideout Helm, and a frenzied K. Rool orders his men to activate the machine, despite the risks of it blowing up on them. Unfortunately, thanks to the recovered blueprints, Snide manages to buy the Kongs enough time to reach the supercomputer powering the laser, fight through all of the defense systems, and take the Banana Medal power cores, shutting the machine down for good.


If you choose to quit the game or if you fail to deactivate the Blast-O-Matic within the allotted amount of time, you incur the game over scene which shows the Blast-O-Matic activated and pointing at DK Isle, just before destroying it.

In order to deactivate the machine and save DK Island (before the Kremlings repair it), the Kongs must collect Blueprints from Kasplats during their adventure, give them to Snide, and then enter Hideout Helm. Depending on how many Blueprints the Kongs collect, the Blast-O-Matic will be delayed from destroying DK Island; the default amount of time is ten minutes, with an additional minute granted for each Blueprint turned in to Snide, making the maximum amount of time 50 minutes.


  • It is unknown as to how the Kong's can increase their time to deactivate the Blast-O-Matic by returning blueprints when Snide has no access to the weapon.
  • In the later game Banjo-Tooie, there is a similar device by a similar name called the Big-O-Blaster, commonly referred to as "BOB", which was used by Gruntilda to drain life force.

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