Donkey Kong Wiki
Not to be confused with Crocodile Isle from the games Donkey Kong Country 2 and Donkey Kong Land 2.
ExitIsNearSign.png K. Rool's Mobile Island Fortress ExitSign.png
K. Rool's Mobile Island Fortress .png
King K. Rool's Mobile Island Fortress as seen in the game Donkey Kong 64 for Nintendo 64.
Greater location(s) DK Isles (latest known location)
Ruler(s) King K. Rool
Inhabitant(s) Kremling Krew
Game(s) Donkey Kong 64
First Appearance Donkey Kong 64 (1999)
Latest Appearance Donkey Kong 64 (1999)
"SQUAWK! He's back! DK! King K. Rool's island is just over there. He must be the one who stole your bananas and kidnapped the other Kongs! I've taken a quick look around, but the only area that hasn't been blocked off is that island with a cave on it over there! BWARK!"
Squawks the Parrot in the game Donkey Kong 64

K. Rool's Mobile Island Fortress[1] (also referred as Crocodile Isle[2] or Crocodile Rock[3]) is an island-like warship used as base of operations for King K. Rool and his Kremling forces during the game Donkey Kong 64.

Hull Appearance

The watercraft has the shape of K. Rool itself supported by a floating platform with red and yellow propellers. The body is covered by rocks with steel patches, gray steel floors, pipes, three doors, wooden bridge and a huge hatch in the chest where the Blast-O-Matic pole is. The head and arms are made of bronze, red eyes, sharp nails and a golden crown.


The idea of an artificial island was started by K. Rool when the Crocodile Isle was destroyed (in Donkey Kong Country 2 and Donkey Kong Land 2) and the restoration of Kremling Krew where all the Kremling remnants are welcomed (after Donkey Kong Country 3). The design and constructon was started by Snide when he was hired by K. Rool.[4][5]

The ship is used by K. Rool with his minions to explore seas and invade the DK Isles. There is also an islet-like ship towed by the main island via cable where K. Rool's giant younger brother, K. Lumsy, was imprisoned for refusing to destroy the DK Island. The warship is armed with a doomsday laser device, called the Blast-O-Matic, which was developed by Snide, is capable of destroying the DK Isles. While the Kremlings take a long time to prepare the weapon to shoot, King K. Rool sits on his chamber with his pet, where he uses a large monitor to order his subordinates around and watch the progress of the Kongs during the events of Donkey Kong 64.

Besides King K. Rool, the fortress is manned by Klumps and Kasplats, and operated by Kritters and Klaptraps. There are four levels in the island: Frantic Factory, Gloomy Galleon, Creepy Castle, and Hideout Helm. In Frantic Factory, Chunky Kong must be rescued by the other primates. In Hideout Helm, the final level of the game, all five playable Kongs must quickly traverse the location and turn off the Blast-O-Matic within a time limit to save the DK Isles. After the heroes are successful and collect all eight Boss Keys for unlocking K. Lumsy's cage, King K. Rool will try escape aboard his airship, the King Kruiser II. K. Lumsy will chase the vehicle around DK Island, stumble on a boulder and knock down the airship on the ground, setting the location for the final boss battle in the game.

After the defeat of King K. Rool in Donkey Kong 64, the Mobile Island Fortress does not make other appearance in the Donkey Kong series, making its current state unknown.




  • In Donkey Kong 64, if the player fails to desactivate the Blast-O-Matic machine in the level Hideout Helm or chooses to quit the game at any moment, a cutscene will play. During the cutscene, K. Rool will start to laugh maniacally on his chair inside the fortress and press some buttons to activate his doomsday weapon. Outside, "Game Over" will flash at the screen, the Blast-O-Matic will start to charge, and the screen will fade in to black before the laser shoots, leaving the fate of DK Island unknown to the player. This Game Over cutscene can be considered an alternative bad ending for the game.


  1. Barton, Jeff, Mario De Govia, and Donato Tica. Donkey Kong 64 Prima's Official Game Guide, page 14
    This title is on K. Rool's description where he lives.
  2. THE ISLANDS: "The once idyllic Kong Isle now has an unpleasant neighbor in the form of K. Rool's massive mechanical Crocodile Isle. This monstrosity towers over our homeland, withe the ridiculously named Blast-o-Matic device ready to reduce it to rubble. Between them, these two contrasting islands conceal the entrances to all the levels."
    —Cranky Kong in Donkey Kong 64 Instruction Booklet, Nintendo, 1999, page 23
  3. ABOARD CROCODILE ROCK: "After Diddy delivers his key to K. Lumsy, the Kremling's tremors of joy will shake open a door on Crocodile Isle and raise a plataform on its lower deck. Swin to the isle and hop onto the raised plataform to reach the catwalk. Follow the path to the door at the top, then venture inside to meet up with Chunky, and a box of toys more dangerous than darts."
    —M. Arakawa. Donkey Kong 64 Player's Guide, Nintendo, 1999, page 49 on Wayback Machine
  4. SNIDE: "The former chief technician of King K. Rool's is primarily responsible for the design and construction of the floating fortress and the Blast-o-matic."
    —German website of Donkey Kong 64
  5. SNIDE: "Snide is willing to help the Kongs if they help him. Once he was K. Rool's mechanical mastermind, but then the ungrateful monarch stole Snine's Blueprint of the king's floating island and gave the hapless henchman the royal boot. Only the Kongs can help him now. In every world there's a Kremling with hair that matches one Kong's deesignated color. If that Kong defeats the Kremling, he or she will win one piece of the Blueprint, which, when taken to Snide's Hideout, will garner a Golden Banana as a reward."
    —M. Arakawa. Donkey Kong 64 Player's Guide, Nintendo, 1999, page 7 on Wayback Machine
  6. Blast-O-Matic on Smashpedia