Key Stones are objects that appear in , Sonic Adventure and the Sonic Adventure DX: Director's Cut PlayStation 3/ Xbox 360 version of . They are small figures that work as keys, which can be picked up by the playable characters and be used by the player to open sealed doors or paths by placing them in their matching pedestals.
In general, Key Stones are figures that come in sizes ranging from slightly smaller than
Sonic's full height to about the size of a head. Each Key Stone have a square rock stand with a figure fixed on top of them, which is usually a lump of crystal, but also sometimes a statuette. All Key Stones found within a general area come in different varieties, with their own specific colors and shape. They can be found lying around in specific places in the game's environment.
Key Stones are used to unlock paths and doors that cannot be open by any means. To unlock such paths with a Key Stone, the player has to pick up a Key Stone and take it to a nearby pedestal with colors or symbols matching that of the Key Stone, and then insert it there, which will then unlock the path. If a Key Stone is inserted into a non-matching pedestal, nothing will happen. However, if inserted or just placed in the proximity of a matching pedestal, the Key Stone will automatically float up and insert itself into the pedestal.
Unlike conventional items in the
, like Sonic the Hedgehog series Rings, regular keys or various collectibles, Key Stones do not enter the in-game inventory once the playable character touches them. Instead, the player has to have the playing character manually pick it up and carry it by hand during gameplay until they are released. While carrying a Key Stone, a playable character's speed is lowered and their unique actions cannot be performed (e.g. Sonic's Sonic the Hedgehog's Spin Dash, Tails's Propeller Flight, Sonic the Werehog's Skills etc.).
Sonic Adventure and Sonic Adventure DX: Director's Cut
Key Stones made their first appearance in
and Sonic Adventure . In these games, the Key Stones are used by the player to open up passages to the games' Sonic Adventure DX: Director's Cut Action Stages in the Adventure Fields, allowing the player to play through new Action Stages and progress with the storylines. Key Stones can be found in the games' Adventure Fields and appear accordingly to when the player needs to enter the Action Stage that the Key Stone grants access to.
Sonic Adventure and Sonic Adventure DX: Director's Cut feature each a total of four different Key Stones:
Amy Rose's version of Hot Shelter there are objects called power cubes which works in the same way as Key Stones and are used at two points in the Action Stage. When the player inserts a set of four different colored power cubes into their matching fixture, it will unlock a new path.
Key Stones made another appearance exclusively on the
PlayStation 3/ Xbox 360 version of . In this game, the Key Stones only appear in the Nighttime Action Stages where Sonic Unleashed Sonic the Werehog is playable, and resemble crystals that come in the colors red, blue, green and yellow.
Here, the Key Stones are used to solve puzzles inside the Nighttime Action Stages by finding a certain number of Key Stones, which are hidden in the environment and then inserting them into their matching pedestals, which will then open up doors or activate mechanics that will allow the player to proceed. While most doors open and mechanics activate with one or two of Key Stones, major doors will need all four Key Stones to open.
Sonic Adventure / Remake / DLC /
Sonic ( Super Sonic) | Tails | Knuckles | Amy | E-102 Gamma | Big | Eggman | Chaos | Froggy | Tikal | Pachacamac | Chao | Metal Sonic* | Cream* | Silver Sonic II* | Chao
Baby Kiki | Rhinotank | Sweeper | Leon | Boa-Boa | Spinner | Ice Ball | Kart Kiki | Buyoon | Cop Speeder | Spiky Spinner | Electro Spinner | Ghora | Egg Keeper | Beat | Mecha Fish | Egg Pirate
Beta ( Mark II) | Gamma | Delta | Epsilon | ZERO | Zeta
Adventure Fields Egg Carrier | Mystic Ruins | Station Square
Chao Gardens Station Square Garden | Mystic Ruins Garden | Egg Carrier Island
Angel Island | Black Market | Chao Stadium | Tails' Lab
Emerald Coast | Windy Valley | Casinopolis | IceCap | Sky Chase | Twinkle Park | Speed Highway | Red Mountain | Sky Deck | Lost World | Hot Shelter | Sand Hill | Twinkle Circuit | Final Egg
Chaos 0 | Chaos 2 | Chaos 4 | Chaos 6 | E-101 Beta | E-101 Mark II | E-102 Gamma | E-103 Delta | E-104 Epsilon | E-105 Zeta | Egg Carrier | Egg Hornet | Egg Viper | Egg Walker | Perfect Chaos | ZERO
Climb | Dig | Flight Mode | Propeller Flight | Glide | Hammer Attack | Hammer Jump | Hover | Homing Attack | Homing Missile Launch | Jump Attack | Laser Gun | Light Speed Attack | Light Speed Dash | Lightning Bolt | Lure Attack | Maximum Heat Knuckles Attack | Punch Attack | Rapid Tails Attack | Spin Hammer Attack | Spin Dash | Spin Jump | Tails Attack
Level Up Items Ancient Light | Crystal Ring | Fighting Gloves | Jet Anklet | Jet Booster | Laser Blaster | Life Belt | Light Speed Shoes | Long Hammer | Lure | Power Rod | Rhythm Badge | Shovel Claw | Warrior Feather
English Voice Actors
Ryan Drummond ( | Sonic) Corey Bringas ( | Tails) Michael McGaharn ( | Knuckles) Deem Bristow ( | Eggman) Jennifer Douillard ( | Amy) Jon St. John ( | Big) Elara Distler ( | Tikal, Station Square Train Voice, Default Menu Voice) Steve Broadie ( | Gamma, Pachacamac, Mystic Ruins Train Voice) Tomoko Sasaki (
Japanese Voice Actors
Jun'ichi Kanemaru ( | Sonic) Kazuki Hayashi ( | Tails) Nobutoshi Kanna ( | Knuckles) Chikao Ōtsuka ( | Eggman) Taeko Kawata ( | Amy) Shun Yashiro ( | Big) Kaori Asō ( | Tikal) Jōji Nakata ( | Gamma) Tōru Ōkawa ( | Pachacamac) Kaho Kōda (Station Square Train Voice) | Nobutoshi Kanna (Mystic Ruins Train Voice) | Elara Distler (Default Menu Voice) | Tomoko Sasaki (
/ Original Soundtrack / Remix / Vocal Mini Album / 20th Anniversary Passion & Pride
Believe In Myself | It Doesn't Matter | Lazy Days | My Sweet Passion | Open Your Heart | Unknown from M.E.
Air Bubbles | Auto Running | Bumper | Cannon | Capsule | Chao Eggs | Chaos Emerald | Chao in Space | Chao Machine | Conveyor Belt | Corkscrew Loop | Dash Panel | Dash Ring | Debug Mode | Egg Carrier 2 | Emblem | Emerald Radar | Emerald Shard | Employee ID Card | Flipper | Gallery | Balloon | Hedgehog Hammer | Jump Panel | Item Box ( Bomb, Extra Life, Invincibility, Lightning Shield, Power Sneakers, Shield, Super Ring) | Key Stone ( Gold Statue, Ice Stone, Silver Statue, Wind Stone) | Mission Mode | Monkey Destruction Switch | Mr. Know-It-All | Pinball Shooter | Power cube | Ramp | Ring | Rocket | Sandboard | Shuttle Loop | Sky-Chase Dragon | Slot Machine | Snowboard | Sonic Token | Station Square Police | Switch | Target Dolls | Teleporter | Tornado | Tornado 2 | Twinkle Circuit Hover Car | Wind Path | Zip Line
. Sonic Adventure DX
Sonic ( Super Sonic, Sonic the Werehog) | Chip ( Gaia Colossus) | Tails | Amy | Dr. Eggman | Professor Pickle | Orbot | Dark Gaia ( Perfect Dark Gaia)
/ Town Stages Villages Apotos | Mazuri | Spagonia | Chun-nan | Holoska | Shamar | Empire City* | Adabat | Eggmanland
Action Stages /
Stages Windmill Isle | Savannah Citadel* | Rooftop Run | Dragon Road | Cool Edge | Arid Sands | Skyscraper Scamper* | Jungle Joyride | Eggmanland
Alexis | Anastasia | Eric | Gregorios | Hot Dog Vendor* | Ice Cream Vendor | Lambros | Lucas* | Milos* | Sandra
Aida* | Barbara | Ciccio | David | Denise | Dora | Elio* | Federica | Franco* | Gigi | Hot Dog Vendor* | Ippolita | Irma* | Josef | Lilli* | Lucia | Marcantonio* | Mauro | Natalia* | Otto | Professor Pickle | Professor Pickle's Assistant | Raimondo
Ana | Essie | Gwek | Hog Dog Vendor* | Kofi | Kwami | Kwod | Yawa | Yaya
Chun | Hot Dog Vendor* | Hualin | Jinlin* | Lin | Shuifon | Wang* | Yilin | Zonshen
Hot Dog Vendor* | Jari-Pekka | Jari-Thure | Marketa | Sarianna | Ursule
Ara | Dimah | Ehsan | Erhan | Hizir | Hot Dog Vendor* | Iman | Labib | Latif | Layla | Mufid | Musaid | Raniya | Sa'id | Sadiq | Safi | Samia | Sammar | Shadi | Utba | Yasmine
Boss* | Brenda* | Charles* | Def Big* | Elizabeth* | Hot Dog Vendor* | Li'l Kate* | Louie Montaine* | Robert*
Hot Dog Vendor* | Jamal | Kaeo | Nagi | Rudi | Teanchai
EF-DC1998* | EF-MD1991* | EF-XB2006* | Hot Dog Vendor*
Egg Beetle | Egg Cauldron* | Egg Dragoon | Egg Devil Ray | Egg Lancer | Dark Gaia | Dark Gaia Phoenix | Dark Guardian | Dark Moray | Perfect Dark Gaia
Crouch | Foot Sweep* | Grinding | Homing Attack | Hop | Light Speed Dash | Slide | Skydiving | Sonic Boost | Sonic Drift | Spin Jump | Stomp | Quick Step | Wall Jump
Dash | Double Jump | Grab | Guard | Skills | Unleashed Mode | Wall Shuffle
Super Sonic Boost
Attacks Donkey Kick Combo* | Double Axle Combo* | Double Kick Combo* | Feral Were-Hammer* | Knuckle Sandwich Combo* | Sho-Hog-Ken* | Unleashed Knuckle Sandwich* | Vertical Were-Hammer* | Were-Hammer* | Werewheel Rush*
Attacks Earthshaker* | Egg Scrambler* | Feral Wild Whirl* | Rolling Kick Combo* | Sho-Claw-Ken* | Ultimate Wild Combo* | Unleashed Wild Combo* | Wereclap* | Wild Whirl* | Wild Whirl Were-Hammer*
Attacks Aerial Claw Slash* | Aerial Claw Slash and Spin* | Aerial Piledriver* | Crescent Moon Strike* | Diving Bodypress* | Flying Double-Punch* | Flying Double-Punch Crush* | Hurricane Combo* | Shooting Star Combo* | Typhoon Combo*
Attacks Comet Punch* | Missile Punch* | Spinning Needle Attack* | Tricky Tornado Uppercut* | Triple Wild Claw* | Were-Claw Charge* | Were-Cyclone* | Were-Rush* | Were-Tornado* | Wild Werewhip*
Beatdown** | Crescent Moon Strike** | Earthshaker** | Wereclap** | Were-Hammer** | Were-Claw** | Were-Wallop** | Wild Claw** | Wild Whirl**
Upgrades Air Boost Shoes* | Light Speed Dash Shoes* | Stomping Shoes* | Wall Jump Shoes*
Aero-Cannon | Aero-Chaser | Egg Blizzard | Egg Burst | Egg Fighter | Egg Fighter: Knight ( Electric shield, Spring shield) | Egg Fighter: Shield ( Electric shield, Spring shield) | Egg Fighter: Sword* | Egg Flame | Egg Launcher (H) | Egg Launcher (H+V) | Egg Launcher (V) | Egg Shackle | Egg Shooter | Egg Typhoon | Gold Aero-Cannon | Interceptor | Little Fighter* | Mole Cannon | Spinner | Thunder Ball | Thunder Spinner
Dark Gaia's Minions Big Mother | Cure Master* | Dark Bat | Dark Bat Sniper | Dark Eel* | Dark Fright | Dark Master** | Deep Nightmare | Evil Flower* | Fire Master | Fright Master | Killer Bee | Lightning Master | Little Rex | Nightmare | Power Master* | Red Fright | Red Killer Bee | Red Nightmare** | Red Deep Nightmare** | Red Rex | Red Titan** | Spike** | Thunder Bat | Titan
Art Book* | Audio System | Balloon | Blue Tea* | Bobsled | Bookshelf* | Bomb | Buggy | Check Point | Chaos Emerald | Chaos Orbs* | Container | Conveyor Belt | Crane Lift | Crank | Crystal Ball* | Dark Energy Keys** | Dark Gaia Force | Dash Panel | Dash Ring | Door | Gaia Key* | Goal Ring | Gift* | Gramophone* | Green Tea* | Grind Rail | Hourglass* | Item Capsules** | Ramp | Key Stone* | Laser Field Block | Lever | Maiden Statue* | Miles Electric | Moon Tablet** | Old Necklace* | Planet Tablet** | Pick-Me-Up* | Pretty Bouquet* | Lovely Ring* | Power Shield* | Rainbow Ring | Record* | Red Tea* | Ring | Shield Charge* | Souvenirs* | Spear** | Spiked Ball | Spikes | Springboard/Spring | Springpole | Sun and Moon Medals | Sun Tablet** | Sundae Supreme | Super Claw* | Super Ring | Switch | Tornado-1 | Trap Spring | Turquoise Tea* | TV* | Videotape* | Violet Tea* | White Tea* | Wide Spring | Yellow Tea* | Zip Line | 1UP
English Voice Actors
Jason Griffith ( | Sonic, Sonic the Werehog, Prof. Pickle's Assistant) Amy Palant ( | Tails) Lisa Ortiz ( | Amy) Anthony Salerno ( | Chip) Mike Pollock ( | Eggman, Zonshen) Christopher Collet ( | Orbot) Dan Green (
Ice Cream Vendor, Prof. Pickle)
Japanese Voice Actors
Jun'ichi Kanemaru ( | Sonic) Chikao Otsuka ( | Eggman) Chō ( | Prof. Pickle) Ryo Hirohashi ( | Tails) Taeko Kawata ( | Amy) Tomokazu Seki ( | Sonic the Werehog) Ryōko Shiraishi (
Planetary Pieces Endless Possibility | Dear My Friend
Auto Running | Bandanna Ghost and Bow Tie Ghost* | Boost Gauge | Boss Gate | Chao* | Chaos Energy Cannon | Chun-nan's Treasure | Collection Room* | Dark Energy Force Fields** | Don Fachio* | Earth | Eggman Fleet | Egg Mobile | Entrance Stage* | Exorcisms | Gaia Gate | Gaia Manuscripts | Gaia Temple | Gallery | Hallowmoon | Havok | Hint | Orb Result** | Quick Time Events | Script | Shield | Shield Gauge | Shop* ( Counter of Dreams 2, Eggshop, Flying Fish Beach Shop, Golden Trading Company, Josef's, Surfside Seagull Sundries, Traveling Salesman Wentos, Treeshade, Ursule's Trading Post, Wang's Emporium) | Shuttle Loop | Sonic: Night of the Werehog | Sonic Unleashed (Mobile) | Sonic World Adventure (manga) | Ranks | Time of Awakening | Tornado Defense* | Unleashed Gauge
"*" Exclusive to
PS3/ Xbox 360 version "**" Exclusive to PS2/ Wii version.