Banjo-Kazooie: Grunty’s Revenge

Gruntilda remains beneath the boulder that fell after her defeat at the end of the first game. Klungo cannot move it, so he constructs Mecha-Grunty, a metal body into which the witch can send her spirit. This gives her a way to act while her original body stays imprisoned. Mumbo watches the preparations from cover and hears the plan to take Kazooie into the past, preventing the partnership that allowed the duo to defeat Gruntilda. He reaches Banjo's house with a warning, but the machine arrives before the friends can stop the kidnapping. Kazooie disappears with the witch, and Mumbo uses a powerful spell to send Banjo to the same period. The destination is a less developed Spiral Mountain, where Gruntilda's stronghold is still being built. Bozzeye has received a mysteriously delivered letter explaining Banjo's arrival and his need to relearn moves forgotten during the journey. The elderly mole's lessons replace Bottles' role in the console adventure, beginning with skills that Banjo can use on his own. Without Kazooie, the bear relies on jumping, swimming, climbing, rolling and striking with his empty backpack. That restriction remains meaningful through Cliff Farm and the first part of Breegull Beach, where Gruntilda is exploiting captive breegulls in her quarry. Banjo reaches Mecha-Grunty while Kazooie is held nearby and fights without the bird's attacks. Avoiding the machine's shielded movements and striking when it stops allows him to defeat the witch's first attempt at stopping him. Kazooie's release restores their partnership, but does not end the time-travel threat. She explains that Gruntilda still intends to change the past so that the two never meet in the future, and the pair continue after her. Their reunion also restores the Flap Flip and makes further bird-based lessons possible, opening high ledges, steep slopes and egg mechanisms that Banjo could not use during the opening stages.

Spiral Mountain is the central exploration area and has a full set of collectibles, rather than serving only as the opening tutorial. Paths lead to Bozzeye's molehills, Honey B's hive, the Jinjo Oracle, Jiggywiggy's Temple and the developing witch's stronghold. Master Jiggywiggy explains that Gruntilda has scattered the Jiggies and cursed the Jiggy Priests so that they cannot touch them. Banjo must gather the pieces and release their power at the temple's altar to break her seals. The required totals are one Jiggy for Cliff Farm, six for Breegull Beach, fourteen for Bad Magic Bayou, twenty-four for Spiller's Harbor and thirty-nine for Freezing Furnace. Fifty open the way to Grunty's Stronghold. The altar sequence uses the collected pieces' magic; it does not repeat Tooie's timed moving-picture challenges. Cliff Farm introduces barns, a water mill, raised fields, sheep and Mama Clucker's missing chicks, giving Banjo several jobs before his partner returns. Breegull Beach moves between shoreline, lagoon, wooden platforms and Grunty's Quarry, with captive birds and a damaged dolphin habitat connecting the local challenges to the witch's work. Bad Magic Bayou replaces safe ground with toxic water, narrow boardwalks, poisonous vapour and the rooms of Monster Manor. Spiller's Harbor combines polluted docks, ships, a lighthouse and the settlement of Spillerston, where the ice-cream seller, missing children and arcade are found. Freezing Furnace joins icy outdoor passages to lava caves and an industrial complex called Grunty Industries. These are five main worlds, with Spiral Mountain bringing the number of collectible areas to six. Later moves and reusable transformations make return visits necessary, including trips back into the hub for rewards that were visible much earlier.

The complete collection consists of sixty Jiggies, six hundred Musical Notes, thirty Jinjos and twelve Hollow Honeycombs. Each of the five worlds and Spiral Mountain contains ten Jiggies, one hundred Notes, five Jinjos and two Honeycombs. Jiggies can be found directly, awarded by a resident, released by a switch or earned through a boss or minigame. A world entrance may therefore be available before every local task has been finished, leaving room to choose which challenges to complete before returning to the temple. Notes qualify the duo for Bozzeye's lessons, with higher totals required for later abilities. They remain collected after leaving an area or losing health, so the original Nintendo 64 game's single-visit Note Score system does not apply. Individual Notes form most of the trails, with five-Note nests also appearing in later areas. The Jinjo Oracle provides another reason to explore beyond the direct route. Rescued Jinjos bring her information, and speaking to her reveals clues about nearby tasks and concealed rewards. Once all five Jinjos in an area have been reunited, the Oracle supplies their Jiggy reward, which counts as one of that area's ten pieces. Hollow Honeycombs go to Honey B. in the Spiral Rise region of the hub. At totals of two, four, eight and twelve, she adds units to the health meter, raising its initial four units to a maximum of eight. Ordinary Honeycombs restore health rather than extending its capacity, and marked varieties use a timing-based selection to determine the recovery. Eggs and Gold Feathers are replenishable supplies, while Mumbo Totems unlock transformations. The game's pause-screen totals keep the permanent collections separate, helping identify whether an unfinished area still needs a Jinjo rescue, a character reward or an ability that has not yet been learned.

Bozzeye teaches from molehills positioned near obstacles that demonstrate the new move. The first Pack Whack lesson requires ten Notes and lets Banjo attack with his backpack, breaking objects and dealing with enemies before Kazooie is rescued. Cliff Farm adds diving, climbing and rolling. Diving begins at bubbling water entrances and leads into underwater routes where the air supply must be watched, while vines and ladders provide access to higher ground. After the reunion in Breegull Beach, the pair can relearn abilities built around Kazooie's wings, feet and beak. The Feathery Flap extends a jump, the Flap Flip reaches higher ledges, and Talon Trot increases their speed while allowing them to climb steep slopes. The aerial Rat-a-tat Rap helps against enemies that cannot be reached safely with a ground attack. Bill Drill strikes marked ground and grates, shaking loose objects or revealing routes below the surface. Green Shock Jump Pads supply another way to reach high platforms once their lesson is available. Wonderwing is tied to designated red pads in this game: activating one surrounds the duo with protective feathers, consuming Gold Feathers while the effect lasts. Egg firing also has its own stance and four ammunition types. Ordinary Blue Eggs handle basic targets, Battery Eggs power the marked toll holes and machinery, Ice Eggs operate cold-sensitive mechanisms or extinguish suitable hazards, and Fire Eggs melt ice and activate their matching devices. Switching ammunition matters because a mechanism marked for one kind of egg is not necessarily satisfied by another projectile. The final Fire Egg lesson in Freezing Furnace requires 470 Notes. These abilities make earlier obstacles usable, including the hub's final approach, so newly learned moves are worth testing outside the world that introduced them. Free flight, despite appearing in development material, is not an obtainable movement mode in the released adventure.

The trainee Mumbo Jumbo changes Banjo's body after receiving the special Totems left by defeated bosses. Four Totems correspond to four forms, and a form that has been unlocked can be requested again at Mumbo's Pads instead of requiring a fresh payment every time it is used. This is important for completing later worlds, where a previously useful shape may solve a new obstacle. Cliff Farm's Mouse fits through small holes and gaps in fences, allowing access to rooms and enclosed gardens that the normal duo cannot enter. Its small size comes at the cost of their usual fighting ability, so avoiding enemies becomes more important. The same form is later used to free chained breegulls in the quarry and explore small openings elsewhere. Bad Magic Bayou introduces Candle Banjo, whose flame illuminates dark interiors and ignites suitable objects. Rolling brings that flame into contact with a target; water is dangerous to the form, so it cannot replace an ordinary swim across the swamp. The Candle also has a later use in Freezing Furnace, where it can ignite a fuse associated with a frozen Jinjo. Spiller's Harbor's Octopus moves through oily water safely, swims quickly and fires a stream of water. It can enter openings larger than the Mouse's tiny holes but too small for Banjo, and remains useful in the icy waters of Freezing Furnace. The final Tank has a powerful cannon for strong obstructions and enemies, with another important return visit to Bad Magic Bayou. Its weight and inability to survive water or other dangerous liquids make route selection part of using it. Mumbo's magic has limits, and the player must return to an appropriate Pad to change forms or revert to the bear and bird. Returning to an earlier world with a newly unlocked form can therefore reveal a route that was inaccessible on the first visit.

Many Jiggies are tied to the concerns of the world's residents. Mama Clucker asks Banjo to find five chicks around Farm Heights, while the Bleaters need help with a hostile Gruntweed and Mrs. Bleater runs the unusual Sheep Dip fishing game. The separate Egg Scramble slide involves collecting twelve stolen eggs for a hen, rather than repeating Mama's five-chick rescue. On Breegull Beach, chained birds need freeing and the Dolphins are affected by the quarry's work. Mr. Ripovski offers different collection and competition arrangements across several worlds, including the five silver coins needed for access to his Slide o' Fear. At Spiller's Harbor, Alfred P. Cock cannot serve customers until the attacking birds are dealt with. His reward is an ice-cream cone, which helps one of the Squits return to Mrs. Squitter; the Jiggy follows when both missing children are home. In Freezing Furnace, Miss Bucket needs pieces of gold to remake a smashed Jiggy, and the living Snowies are rescued through a sled challenge. The eight named arcade minigames are Egg Scramble, Sheep Dip, Battle Boats, Grubby Chute, Magic Angler, Slide o' Fear, Frozen Fish and Snowy Sleds. Their different rules include charging a fishing cast, avoiding an unwanted catch, steering a boat or sled, firing at targets and navigating a slide's hazards or speed arrows. The credits add another sliding sequence in which gold coins are collected while avoiding spikes and oil. Those coins unlock replays at N. Kreditz Arcade in Spillerston, with the arcade's eight entries arranged at twenty-coin intervals up to 160. They are distinct from Ripovski's local silver admission coins and Mumbo's boss Totems. Replaying an arcade activity provides a way to practise its challenge after the adventure's original Jiggy has been earned; it does not turn every repeat victory into another permanent collectible.

Klungo and Gruntilda confront the duo repeatedly as the rescue develops. Witchy Warps lead to isolated boss rooms, separating those encounters from the surrounding exploration. Klungo's potion attacks develop across the journey, including invisibility and stronger formulas, while Mecha-Grunty relies on protective shields, charges and electrical attacks. Her first defeat in the quarry frees Kazooie; the later lighthouse encounter uses the machine's weapons in another setting. Several boss rewards also supply the Totems that make further exploration possible, so reaching a boss can unlock more than a route to the next world. The final approach requires fifty Jiggies, Fire and Ice Eggs, and the relevant jump-pad access around the unfinished lair. Gruntilda's stronghold then presents a sequence of three major fights, with short quizzes between them rather than a single uninterrupted rooftop battle. After the first Mecha-Grunty encounter, the question pad requires two correct answers from three. The next battle is against Klungo, followed by a longer test requiring five correct answers from nine. These questions concern the adventure and lead onward to Winkybunion Tower when passed; failure sends the player back through the associated encounter. The final Gruntilda fight involves both her mechanical body and the spirit inside it. Avoiding charges, sparks and downward attacks creates brief openings to strike the suit, after which the exposed ghost must also be hit to cause damage. Later ghost copies require identifying the real spirit by its shadow rather than attacking every image indiscriminately. Preparing the health meter and ammunition beforehand matters because the sequence does not provide the same freedom to visit Honey B between its stages. Defeat sends Gruntilda's spirit back to her original body beneath the boulder. She tells Klungo to stop exhausting himself trying to move the rock and contact her sisters instead, connecting the ending to the situation in Banjo-Tooie. Mumbo sends the duo home, the freed Jinjos celebrate and a final joke involves Honey B teaching the shaman a bee dance. Gruntilda's attempt to prevent the partnership has failed, leaving the original adventures' history intact.

The portable project began with plans for a Game Boy Color game called Grunty's Curse in 1999. Its proposed story differed from the released adventure, including a version of Kazooie turned against Banjo, and should not be treated as a description of what happens on the GBA cartridge. Development moved to the Game Boy Advance and the project became Grunty's Revenge, with its time-travel plot fitted between the Nintendo 64 games. Rare's handheld team retained the exploration and expressive characters while using an overhead sprite-based view suited to the system. Early footage included free flight, but the developers later explained that it caused problems and did not add enough to the game, so it was removed. Jamie Hughes supplied the game's music, adapting the series' musical character to the handheld adventure; Grant Kirkhope later identified Hughes as the person responsible rather than claiming the work himself. The finished environments use their own themes, short reward cues and character sounds, while readable conversations preserve the alternating politeness, insults and rhyming threats of the console games. THQ's publication followed Microsoft's acquisition of Rare, making the game an early example of the studio continuing to release handheld software on Nintendo hardware under its new ownership. Critical reaction was mixed. Reviewers recognised the effort to translate familiar locations, moves and transformations, while also criticising the short adventure, heavy dependence on collecting and occasional difficulty judging height from the overhead perspective. Frank Provo's GameSpot review discussed both the high production values and those limitations, rather than presenting the release as an unqualified success. Later mobile releases published by In-Fusio revisited the material in different forms: Grunty's Revenge Mobile adapted the adventure for phones, while the separate 2005 Missions game concentrated on minigame-style activities. Missions is not simply another name for the full GBA adventure, and its altered selection should not be described as every original feature transferred unchanged.