Disney's Kim Possible: What's the Switch? is the fifth video game of the Kim Possible series. It is the first Kim Possible game to appear on a home console, as all the other Kim Possible games were designed for hand-held systems.
The gameplay in What's the Switch? follows the same sidescrolling format as the predecessors. In the eleven main levels in the game, Kim is playable in all levels, Shego is playable in all but one level (Monkey Sea...), and Rufus is playable in the Great Brain Robbery, Polar Distress, and Evil Lair levels. Differing from previous games is the use of a 3D environment, which is cartoony like the show. The game switches between having the player play as Kim, Shego, and Rufus at certain areas of some levels, though Kim is the only character used in special missions.
Along the path of each level, the player has the option of collecting two kinds of tokens; Kimmunicator and Club Banana. Kimmunicator tokens unlock bonus content, and gathering all of the tokens in every level of the game unlocks Kim's mission outfit for Shego as an alternative outfit. Club Banana tokens only unlock outfits, each level having three tokens. The outfits are not unlocked linearly; each level has three tokens and if all three are collected then the appropriate outfit is unlocked. Red and green health tokens also drop to replenish each character's 5-hit health bar, and orange KP tokens grant extra lives.
Special missions take place in a 3D simulator created out of square blocks of varying types, and there are six of these missions. Access to each of these missions is gained by finding a secret mission cube in a certain level. Not all levels have these, and they are often dangerous to reach, such as being found over a reservoir of toxic fuel.
The game is also noted for having improved henchmen AI and henchmen having greater range than either Kim or Shego and much shorter times between attacks, giving players a greater challenge than enemies in the previous games. They are also of several types of henchmen besides the differentiation between Dementor and Monkey Fist's. Heavy henchmen are armored and must be left vulnerable by either an uppercut or a flying kick, jet pack henchmen can charge and are invulnerable while doing so, ranged henchmen hurl explosives, and stealth henchmen render themselves invisible until revealed by Kim's EMS. Dementor uses his regular henchmen while Monkey Fist has robotic monkey ninjas designed by Dementor. Ghost monkeys and unique model 'mini' mecha monkeys also appear in the first and last levels of the game, respectively.
There are also three multiplayer modes for those looking to play with a friend.
Kim and Shego both unlock outfits, much like Kim was able to in the game Kim Possible: Kimmunicator from 2005. They are changed at specific points in the levels, denoted by an orange light with a non-rotating Club Banana token hanging above. These outfits are strictly cosmetic and do not convey any bonus to the characters. They are consistent through cutscenes, but are reset when the game exits to the main menu. They can only be changed in the levels themselves.
Kim starts with her mission outfit, but can unlock her Bueno Nacho work outfit (Bueno Nacho), her snow gear (Downhill), an armored mission outfit (A Sitch in Time), her battle suit (So the Drama), the Centurion Project (October 31st), Sheela (Bad Boy), and Shego's outfit (The Twin Factor).
Shego begins with her standard outfit and can unlock the Supreme One outfit (A Sitch in Time), her black leather jacket plus helmet and green leather jacket (Bueno Nacho), a recolored version of Kim's battle suit, her fur jacket (Emotion Sickness), and, when all Kimmunicator tokens are collected, Kim's mission outfit.
Rufus, being a naked mole rat, does not benefit from this.
Kim Possible and Ron Stoppable arrive at Monkey Fist's castle to obtain the Mystical Monkey Idol before Dr. Drakken and Shego can get it first. However, when the two teams fight over the Idol, the power of the Idol affects Ron and Drakken, causing their minds to switch with each other's bodies. Before Kim or Shego can respond, Professor Dementor appears and steals the Idol himself.
Realizing that she needs the Idol to switch Ron and Drakken back to normal, Kim takes off in hot pursuit of Dementor. Shego, however, is also hot on his trail as the two fight through the streets and rooftops of London. In Big Ben, the two meet up again and almost begin fighting each other as Dementor escapes in his air carrier, but a call from Wade eventually have the two form an uneasy alliance to get the idol back, Kim giving Shego Ron's Kimmunicator that was given to him in the events of Team Possible. Although they succeed in getting into Dementor's air carrier, Shego leaves Kim behind and bails out as it almost crashes in his Alaskan lair, resulting in Kim being forced to stoaway on one of Dementor's trains while Shego makes her way through abandoned mines near the tracks. Wade still makes contact with Shego despite this, however, giving her advice on how to get to Dementor's lair.
Within Dementor's Alaskan Lair, it is revealed that Dementor and Monkey Fist were working together, Monkey Fist capturing Shego and escaping the lair with her while Kim disables Dementor's new Siesmic Disinhibitor (a doomsday device). Monkey Fist's double-crossing and stealing of his "greatest invention" causes Dementor to end the villainous alliance, but Kim finds her way on board the freighter Monkey Fist is on. Although she fails to keep the ship from crashing in Tokyo harbor, she does manage to rescue Shego from captivity.
In Tokyo, Monkey Fist unveils his "Mecha Monkey", powered by the Idol he had stolen, which goes on a rampage through Tokyo after splitting in half. Despite legions of robotic monkey ninjas and several wrong turns, Kim and Shego manage to get onto the Mecha Monkey and disable it, escaping with the Idol as it self-destructs (Monkey Fist being caught in the aftermath). Drakken and Ron have their brains switched back and Kim thanks Shego for the "fun and games".
- What's the Switch
- Idol Minds
- Great Brain Robbery
- Time's Up
- Evil Air
- Polar Distress
- Evil Lair
- Doomsday Device
- Monkey Sea...
- Monkey Doo...
Special mission levels:
- Special Mission 1
- Special Mission 2
- Special Mission 3
- Special Mission 4
- Special Mission 5
- Special Mission 6
- Simian Swarm
- Monkey Mayhem
- Double Doomsday
- Grappling Hook: Used for swinging over gaps, unchanged from previous games.
- Gum: Used to activate switches and to hold all but heavy and stealth henchmen in place, leaving them vulnerable to being defeated in one hit.
- Electro Magnetic Scrambler: Used to reveal hidden objects, such as platforms and stealth-using enemies. Unlike the one in So The Drama, it does nothing but disable stealth and does nothing to robotic enemies.
- Grapple Beam: This is Shego's version of Kim's grappling hook and is functionally identical, although it has a different animation.
- Magne-Go: Used to bring objects and enemies towards you. This can also be used to pull ranged henchmen towards Shego or pulling henchmen into gaps to get rid of them without having to fight them, though you will be unable to collect any tokens from them.
- EMPunch: Used to deactivate green electrical boxes and also has combat applications as it stuns enemies when used.
- A demo version of the game was featured on the demo disc in issue 111 of the Official PlayStation Magazine in December 2006. The demo includes the option to play as Kim in the Monkey Sea... level, play as Shego in the Evil Air level, and watch a preview. Although not appeared to be reviewed, the inclusion of the demo appears to show that the editors had high hopes for the game, as demo discs in the magazines have demos for games editors want for readers to keep an eye on.
- All of the show's main stars voice their respective characters, such as Christy Carlson Romano as Kim Possible, Will Friedle as Ron Stoppable, Nancy Cartwright as Rufus, Tahj Mowry as Wade, John Di Maggio as Dr. Drakken, and Nicole Sullivan as Shego.