Grunty's Furnace Fun
- “Welcome all, Grunty's the name, Banjo's here to play my game! My lair is done and here he stands, through all my tricks and traps and lands! This final test will see me win, when Banjo fails then I'll be thin! The prizes on this stand bring joy, from Tooty down to cuddly toy! My little quiz will make you sweat, and Tooty you shall never get! 'Cuz somewhere soon along the way, your lack of skill will make my day... 'Cuz in the fiery pit you'll go, and I will win the prize on show! So step on over to the square, press to try it if you dare!”
- —Gruntilda, Banjo-Kazooie
Grunty's Furnace Fun is a minigame in Banjo-Kazooie, taking the form of a quiz show hosted by Gruntilda.
The entrance to Grunty's Furnace Fun is hidden behind a Note Door that requires 765 Notes to open. Behind the door is a small corridor leading to a room with a warp pad showing Tooty's face on it; stepping on the pad warps Banjo and Kazooie to a fiery cavern, where the minigame starts.
Grunty's Furnace Fun takes the form of a quiz show, which Grunty forces the duo to pass through before they choose a prize: a Gruntilda Doll for third place, a Washing Machine for second place, or Tooty as the "Star Prize."
The quiz is laid out as a tiled board, with each panel representing a different question or challenge. Answering a question correctly or completing a challenge allows Banjo and Kazooie to progress to the next tile. If they fail, Banjo and Kazooie lose one Honeycomb and will not proceed to the next square. If the player loses a life, they must restart the quiz from the beginning. Invisible walls prevent the duo from falling into the lava by accident, although they can still fall off from other parts of the cavern. Most abilities aside from the basic jump are disabled as long as the player remains on the board, even after the minigame is cleared.
When the quiz is completed, Grunty expresses disbelief and anger at the duo's victory, and runs off to the top of the tower. Banjo and Kazooie save Tooty, and as the three of them decide to leave Grunty's lair, the credits plays. When the staff roll ends, Banjo and his friends are seen enjoying a celebratory barbecue, until Tooty reminds them that Grunty escaped and still needs to be defeated, to the others' comical shock. Banjo and Kazooie run back to Grunty's lair, and the game resumes from the end of Grunty's Furnace Fun.
After the quiz is completed, it can no longer be played again on the same save file. A yellow Magic Cauldron behind the warp pad at the start of the minigame can take Banjo to the upper levels of the lair after the other yellow cauldron is activated.
|"A little answer's all I seek, About this game you furry geek!"
Grunty asks a general question about the game.
|"A visual challenge you stupid bear, To tell me who is it or where!"
Grunty will show a picture from one of the worlds from the game, and ask which world was displayed.
|"A question on the sounds I play, Get it wrong to make my day!"
Grunty will either play an audio sample from one of the worlds or a character's voice, and ask which world or character it was from.
|"Prepare yourself to take a whack, Pick this test, you won't come back!"|
|"I think it's time, so let me see, How much you know of little old me!"
Grunty will ask Banjo a personal question. The only way to obtain the correct answers is by asking Brentilda, who will tell Banjo three of Grunty's secrets every time he finds her. These answers are randomized at the start of each file.
|"Get this wrong for Grunty's sake, Then a lava bath you will take!"
These can be of any category. Failing to answer them correctly results in Banjo instantly losing a life, requiring him to restart the quiz.
|"Just one chance to get this right, Win a joker and help it might!"
These can be of any category. Answering them correctly results in Banjo gaining 2 joker cards, which can be used to skip any square on the board. Unlike the other panels, a Joker Panel is consumed after one question, regardless of whether or not Banjo was correct.
- The Joker card panel's fanfare was reused for Lanky Kong's highlight theme in the Tag Barrel in Donkey Kong 64.
- The possibility of getting a question wrong on the Grunty Panel and being thrown into the lava was vaguely alluded to by Brentilda, who stated that knowing facts about Grunty would help the duo avoid a "fiery fate."
- Some of the incorrect answers reference various other characters:
- Captain Blackeye, who was intended to be the main villain in Dream: Land of Giants, the game that would eventually become Banjo-Kazooie.
- Humba Wumba the sha-woman, who would later debut in Banjo-Tooie.
- Cranky Kong and "Funky the monkey" (Funky Kong), who are characters from the Donkey Kong Country games.
- Conker the Squirrel, who previously appeared alongside Banjo in Diddy Kong Racing, and would later star in his own games Conker's Pocket Tales and Conker's Bad Fur Day.
- By making use of a trick involving Sudden Death squares, Banjo is able to walk over the later half of the board and skip the entire minigame.