Spike Trap

The Spike Trap^[1] is an obstacle that appears in the Sonic the Hedgehog series. It is a variant of the Weight with Spikes on the bottom.

Description

The Spike Traps have the same basic appearance of that of the Weights, which is a large, black and rectangular metallic block with a red line along its edges. Unlike the Weights however, they have Spikes on their bottom surface.

The Weights can moves up and down automatically in intervals. Some of them fall down instantly while others take their time. When they are about to fall, the red outline on them flashes. Filling the role of obstacles, the player will take damage should the Spike Traps fall down on Sonic or if their spikes touches him, though they will not make the player lose a 1-Up like the Crushers. Alternatively, the player can climb on top of Spike Traps as they rise, which makes them work like rising and falling platforms.

Games appearance

Sonic Unleashed

In the Xbox 360/Playstation 3 version of Sonic Unleashed, Spikes Traps appear in outfits that resemble the environment that they are in. Sometimes the ground itself rise up to them.

Sonic Colors

In the Wii version of Sonic Colors, they appeared in Sonic Simulator, where they keep moving slowly toward the player when they are in front of them. In this game, they are in horizontal form.

Sonic Generations

In the console/PC version of Sonic Generations, they are large metallic obstacles that have the same abilities that appeared in the previous game. They are some of the deadliest gimmicks in the game.

References

↑ BradyGames (1 November 2011). Sonic Generations Official Strategy Guide. BradyGames. p. 163. ISBN 978-0744013429.

Sonic Unleashed

Playable characters		Sonic (Super Sonic, Sonic the Werehog) \| Gaia Colossus
Non-playable characters	Apotos	Alexis \| Anastasia \| Eric \| Gregorios \| Hot Dog Vendor* \| Ice Cream Vendor \| Lambros \| Lucas* \| Milos* \| Sandra
	Spagonia	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
	Mazuri	Ana \| Essie \| Gwek \| Hog Dog Vendor* \| Kofi \| Kwami \| Kwod \| Yawa \| Yaya
	Chun-nan	Chun \| Hot Dog Vendor* \| Hualin \| Jinlin* \| Lin \| Shuifon \| Wang* \| Yilin \| Zonshen
	Holoska	Hot Dog Vendor* \| Jari-Pekka \| Jari-Thure \| Marketa \| Sarianna \| Ursule
	Shamar	Ara \| Dimah \| Ehsan \| Erhan \| Hizir \| Hot Dog Vendor* \| Iman \| Labib \| Latif \| Layla \| Mufid \| Musaid \| Raniya \| Sa'id \| Sadiq \| Safi \| Samia \| Sammar \| Shadi \| Utba \| Yasmine
	Empire City	Boss* \| Brenda* \| Charles* \| Def Big* \| Elizabeth* \| Hot Dog Vendor* \| Li'l Kate* \| Louie Montaine* \| Robert*
	Adabat	Hot Dog Vendor* \| Jamal \| Kaeo \| Nagi \| Rudi \| Teanchai
	Eggmanland	EF-DC1998* \| EF-MD1991* \| EF-XB2006* \| Hot Dog Vendor*
	Misc.	Amy \| Chip \| Dark Gaia (Perfect Dark Gaia) \| Dr. Eggman \| Tails \| SA-55 \| Su* \| Uh* \| Wentos*
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 \| Tornado Defense*
Enemies	Eggman's Machinery	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
Enemies	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
Bosses		Egg Beetle \| Egg Cauldron* \| Egg Devil Ray \| Egg Dragoon \| Egg Lancer \| Dark Gaia \| Dark Gaia Phoenix \| Dark Guardian \| Dark Moray \| Perfect Dark Gaia
Moves/ Techniques	Sonic	Air Boost \| Cartwheel \| Crouch \| Foot Sweep* \| Grind Step \| Grinding \| Homing Attack \| Hop \| Jump Dash \| Lightspeed Dash \| Slide \| Skydiving \| Sonic Boost \| Sonic Drift \| Spin Jump \| Stomp \| Quick Step \| Wall Jump
	Werehog	Dash \| Double Jump \| Grab \| Guard \| Unleashed Mode \| Wall Shuffle
	Misc.	Boost \| Drill Attack \| Super Sonic Boost \| Turbo Boost
Skills	Straight 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*
	Hook 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*
	Aerial 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*
	Special 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*
	Wii/PS2	Beatdown \| Claw Charge \| Crescent Moon Strike \| Earthshaker \| Wereclap \| Were-Hammer \| Were-Claw \| Were-Wallop \| Wild Claw \| Wild Whirl**
Gimmicks and obstacles		Balloon \| Blue spring \| Bobsled \| Bomb \| Buggy \| Buoy \| Check Point \| Conveyor Belt \| Crane Lift \| Crank \| Dark Energy Force Field \| Dash Panel \| Dash Rail \| Dash Ring \| Door \| Fountain \| Giant spear** \| Grind Rail \| Hanging vine \| Hint Ring \| Horizontal Bar \| Hourglass* \| Icicle \| Iron ball \| Jump Selector \| Laser field \| Lever \| Movable box \| Moving Crate \| Rainbow Ring \| Ramp \| Snowblower \| Spike Trap \| Spikes \| Springboard/Spring \| Springpole \| Switch \| Thorn Spring \| Trap Spring \| Trick Jump Panel \| Wide spring \| Zip Line
Items	General	1UP \| 5 Ring Bonus \| 20 Rings \| 100 Count Ring \| Art Book* \| Audio System \| Big 50 Ring** \| Blue Tea* \| Bookshelf* \| Boss Gate \| Chaos Orb* \| Container (Explosive crate, Steel Container, Wooden Container) \| Crystal Ball* \| Dark Energy Key** \| Dark Gaia Force \| Edible item (Apple, Banana, Canned Juice, Chai, Chili Dog, Donut, Sundae Supreme) \| Gaia Gate \| Gaia Key* \| Goal Ring \| Gift* \| Gramophone* \| Green Tea* \| Item Capsule** \| Key Stone* \| Lovely Ring* \| Maiden Statue* \| Moon Medal \| Moon Tablet** \| Old Necklace* \| Planet Tablet** \| Pick-Me-Up* \| Pretty Bouquet* \| Power Shield* \| Record* \| Red Tea* \| Ring \| Shield Charge* \| Souvenir* \| Sun Medal \| Sun Tablet** \| Super Claw* \| Super Ring \| Turquoise Tea* \| TV* \| Videotape* \| Violet Tea* \| White Tea* \| Yellow Tea*
Items	Level Up Items	Air Boost Shoes* \| Light Speed Dash Shoes* \| Stomping Shoes* \| Wall Jump Shoes*
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 (SA-55) \| Dan Green (Ice Cream Vendor, Prof. Pickle)
Japanese voice actors		Jun'ichi Kanemaru (Sonic) \| Chikao Otsuka (Eggman) \| Chō (Prof. Pickle) \| Ryō Hirohashi (Tails) \| Taeko Kawata (Amy) \| Tomokazu Seki (Sonic the Werehog) \| Ryōko Shiraishi (Chip)
Music	Songs	Endless Possibility \| Dear My Friend
Music	Albums	Planetary Pieces: Sonic World Adventure Original Soundtrack
Other		Auto Running \| Boost Gauge \| Boost Gauge \| Chao* \| Chaos Emerald \| Chaos Energy Cannon \| Chun-nan's Treasure \| Collection Room* \| Combo \| Critical Attack \| Don Fachio* \| Doctor Eggman's chair \| Earth \| Eggman Fleet \| Egg Dragoon \| Egg Mobile \| Entrance Stage* \| Exorcisms \| Experience Point \| Freeze \| Gaia Manuscripts \| Gaia Temple \| Gaia Temple guardian \| Hallowmoon \| Havok \| Health Gauge \| Miles Electric \| Orb Result** \| Real-Time Interaction \| Ring Energy Gauge \| 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 World Adventure (manga) \| Spagonia University \| SPD \| Tornado-1 \| Rank \| Time of awakening \| Unleashed Gauge "" Exclusive to Xbox 360/PlayStation 3 version "*" Exclusive to Wii/PlayStation 2 version.

Sonic Colors (Wii)

Playable characters		Sonic (Super Sonic) \| Mii \| Virtual Hedgehog
Non-playable characters		Tails \| Dr. Eggman \| Yacker \| Orbot \| Cubot \| Metal Sonic*
Wisps		White \| Cyan \| Yellow \| Orange \| Blue \| Green \| Pink \| Purple \| Jade*
Areas		Tropical Resort \| Sweet Mountain \| Starlight Carnival \| Planet Wisp \| Aquarium Park \| Asteroid Coaster \| Terminal Velocity \| Game Land
Enemies		Big Chaser \| Buzzer \| Chopper \| Crabmeat \| Egg Chaser \| Egg Pawn \| Jawz \| Larva \| Metal Spinner \| Mole \| Moto Bug \| Sandworm \| Spinner \| Spiny \| Sprinkler \| Thunder Spinner
Bosses		Rotatatron \| Captain Jelly \| Frigate Orcan \| Refreshinator \| Admiral Jelly \| Frigate Skullian \| Asteroid Coaster sub-boss \| Nega-Wisp Armor
Moves/Techniques		Air Boost \| Assist \| Boost \| Crouch \| Double Jump \| Drift \| Grind Step \| Grinding \| Homing Attack \| Hop \| Jump Dash \| Kick boost \| Slide \| Skydiving \| Spin Dash \| Spin Jump \| Stomp \| Super Sonic Boost \| Ring Dash \| Wall Jump
Color Powers		Blue Cube \| Cyan Laser \| Final Color Blaster \| Green Hover \| Jade Ghost* \| Orange Rocket \| Pink Spikes \| Purple Frenzy \| Yellow Drill
Gimmicks and obstacles		Accelerator Gun \| Amber block \| Balloon \| Billiard Ball \| Bomb \| Bottomless pit \| Dash Panel \| Dash Rail \| Dash Ring \| Fan \| Floating turret \| Fountain \| Grind Rail \| Hint Ring \| Iron ball \| Jump Panel \| Mobile spring \| Movable box \| Moving Crate \| Optical cable \| Prism \| Pulley \| Rainbow Ring \| Red School \| Sea Monster \| Slot machine \| Spike Trap \| Spring \| Spring Pole \| Star Post \| Switch \| Thorn Spring \| Trick Jump Panel \| Underground pipe \| Wide spring \| Zip Line
Items		1UP \| 100 Count Ring* \| Air Bubble \| Blue Block \| Blue Ring \| Chaos Emerald \| Container (Black Mound, Steel Container, Unbreakable Container, Wooden Container) \| Egg Medal \| Goal Ring \| Meteorite \| Prison Capsule \| Ring \| Special Ring \| Super Ring \| Wisp Capsule
English voice actors		Roger Craig Smith (Sonic) \| Mike Pollock (Eggman) \| Kate Higgins (Tails) \| Kirk Thornton (Orbot) \| Wally Wingert (Cubot)
Japanese voice actors		Jun'ichi Kanemaru (Sonic) \| Chikao Ōtsuka (Eggman) \| Ryō Hirohashi (Tails) \| Mitsuo Iwata (Orbot) \| Wataru Takagi (Cubot) \| Utako Yoshino (Yacker)
Music	Songs	"Reach for the Stars" \| "Speak with Your Heart"
Music	Albums	Vivid Sound X Hybrid Colors: Sonic Colors Original Soundtrack
Other		Auto Running \| Boost Gauge \| Dr. Eggman's Incredible Interstellar Amusement Park \| Egg Gun \| Egg Shuttle \| Egg Spear \| Miles Electric \| Mind Control Ray \| Moon \| Nega-Wisp \| Options Satellite \| Rank \| Real-Time Interaction \| Shuttle loop \| Sonic Colors: Rise of the Wisps \| Sonic's world \| The Bucket O'Sushi \| Totem pole \| Tractor beam generator \| Wisp Gauge Exclusive to Sonic Colors: Ultimate*.

Sonic Generations (console/PC)

Playable characters		Modern Sonic (Modern Super Sonic) \| Classic Sonic (Classic Super Sonic)
Non-playable characters		Amy \| Animals (Flicky, Picky, Pecky, Cucky) \| Blaze \| Cheese \| Classic Eggman \| Classic Metal Sonic \| Classic Tails \| Cream \| Cubot \| Knuckles \| Modern Eggman \| Modern Tails \| Omochao \| Orbot \| Perfect Chaos \| Rouge \| Shadow \| Silver \| Team Chaotix (Charmy, Espio, Vector) \| Time Eater
Wisps		Orange \| Pink
Stages		Green Hill \| Chemical Plant \| Sky Sanctuary \| Speed Highway \| City Escape \| Seaside Hill \| Crisis City \| Rooftop Run \| Planet Wisp \| Casino Night
Challenge Acts		Doppelganger Race! \| The Buzz Bombers' Revenge! \| Knuckles: Horde of Enemies \| Swingset Circus \| High Speed Challenge \| Look Out Below! \| Tails: Way Past Fast \| Jump Rush \| 300% Boost Gauge Challenge \| Tails: Toxic Skies \| Which Switch is Which? \| Aqua Shield Challenge \| Invincibility Challenge \| One Ring Challenge \| Amy: Taking the Leap Together! \| Grappling with Grabbers \| Underwater Ring Machine \| Eggrobo Rush \| Aerial Paradise \| Ring Time Challenge \| Amy: Topsy Turvy \| Knuckles: Buried Treasure \| 200% Boost Gauge Challenge \| Balloon Bonanza \| High-Speed Hijinks (Modern) \| Cream: Chao Hunt \| Hot Pursuit (Classic) \| High Speed Challenge 2 \| Resisting Arrest \| Overdrift \| Hot Pursuit (Modern) \| Drill Baby Drill \| Espio: Master of Camouflage \| Lord of the Board \| Thunder Shield Challenge \| Rouge: The Bombardier \| Rite of Spring \| Cream: Helping Hand \| Dash Ring 1-2-3 (Modern) \| Topsy-Turvy \| High-Speed Hijinks 2 \| Rescue the Animals! \| Espio: Way of the Ninja \| High-Speed Hijinks (Classic) \| Underwater Challenge \| Rouge: The Temptress \| Trick Island \| Surf, Sea, and Sand \| Terror From the Deep \| Goal Post Juggle \| Vector: Through the Storm \| Flame Shield Challenge \| Ring Time Challenge 2 \| Power Stomp Challenge \| Switcheroo \| Blaze: Piercing the Flames \| Four-way Cannon Cavalcade \| High-Rise Balloon Climb \| Dash Ring 1-2-3 (Classic) \| Charmy: Don't Bug Me! \| One Ring Challenge 2 \| Barrel Ring Bonus \| Rooftop Rail Grind \| Endless Boost \| Vector: Pick Up the Beat \| With Your Powers Combined \| Goal Post Juggle 2 \| Chase After Blaze \| Rescue the Animals 2! \| Cart Challenge \| Charmy: High in the Sky \| Action Master \| Orange Rocket, Blast Off!
Enemies		Aero-Cannon \| Buzz Bomber \| Buzzer \| Chopper \| Cop Speeder \| Crabmeat \| Egg Chaser \| Egg Fighter \| Egg Fighter: Sword \| Egg Launcher (H) \| Egg Launcher (H+V) \| Egg Launcher (V) \| Egg Pawn \| Eggrobo \| Giant Chopper \| Grabber \| Gun Beetle \| Gun Hunter \| Iblis's Minions (Iblis Biter, Iblis Taker, Iblis Worm) \| Mono Beetle \| Moto Bug \| Sandworm \| Spinner \| Spiny \| Sprinkler \| Thunder Spinner
Bosses		Metal Sonic \| Death Egg Robot \| Shadow the Hedgehog \| Perfect Chaos \| Silver the Hedgehog \| Egg Dragoon \| Time Eater
Moves/ Techniques	Playable characters	Air Boost \| Atomic Spin \| Boost \| Bound Jump \| Cartwheel \| Crouch \| Double Jump \| Drift \| Freestyle Tricks \| Grind Step \| Grinding \| Homing Attack \| Hop \| Insta-Shield \| Jump Dash \| Kick boost \| Lightspeed Dash \| Mid-Air Dash \| Quick Step \| Slide \| Skydiving \| Spin \| Spin Dash \| Spin Jump \| Stomp \| Super Sonic Boost \| Super Sonic Missile \| Wall Jump
Moves/ Techniques	NPCs	Chaos Spear \| Dig \| Drill Attack \| Fire Beam \| Heart Effect \| Ice Wave \| Meteor Smash \| Ninja Arts: Camouflage \| Propeller Flying \| Psychic Knife \| Restraint Trap \| Ring Spark Field \| Sun Burst \| V. Maximum Overdrive Attack \| Warping arm attack \| Whirlwind
Color Powers		Orange Rocket \| Pink Spikes
Skills		Aqua Shield \| Flame Shield \| Thunder Shield \| Twin Spin Attack \| Invincible Start \| Shield \| Power Sneakers \| Long Spin Dash \| Treasure Scanner \| Homing Attack \| Hercules Muscles \| Breath Holder \| Boardmaster \| Ring Time \| Blast Off \| Speed Up \| Direct Jump \| Power Stomp \| Quick Slide \| Acceleration \| Smasher Bonus \| Ring Energy Bonus \| Boost Gauge Up \| Serial Homing \| Auto-Gauge \| Gauge Rebooter \| Trick Mastery \| Endless Boost \| Power Brake \| Sure-Footed \| Safety Net \| Last Chance \| 10-Second Rings \| Athleticism \| Time Break \| Super Sonic \| Sega Genesis Controller
Gimmicks and obstacles		Balloon \| Barrel \| Big Balloon \| Bomb \| Bonus Bell \| Bottomless pit \| Bumper \| Cannon \| Capsule \| Cart \| Cloud \| Crusher \| Dash Panel \| Dash Rail \| Dash Ring \| Dimensional Bomb \| Explosion Trap \| Fan \| Flipper \| Four-way Cannon \| Gear Platform \| Goal Plate \| Gondola \| GUN Military Truck \| Hanging Bell \| Heart bomb \| Helicopter \| High-speed warp tube \| Horizontal Bar \| Iron ball \| Jump Panel \| Kao \| Laser field \| Meteorite \| Movable box \| Pole Elevator \| Propeller Spring \| Pulley \| Rainbow Ring \| Rocket \| Route Signal \| Seesaw \| Slot machine \| Spike Trap \| Spikes \| Spinning Top \| Spinning Platform \| Spotlight \| Spring \| Spring Catapult \| Spring Pole \| Star Post \| Switch \| Trap Spring \| Trick Jump Panel \| Wall Jump Block \| Warp Point \| Wide spring \| Zip Line
Items		Air Bubble \| Boss Gate \| Boss Gate Key \| Buoy \| Chaos Emerald \| Container (Case, Spike Block, Steel Container, Unbreakable Container, Wooden Container) \| Energy Core \| Goal Ring \| Information Pod \| Item Box (1-Up, Aqua Shield, Flame Shield, Invincible, Power Sneakers, Skateboard, Super Ring, Thunder Shield) \| Medal \| Mega Mack \| Musical note \| Red Star Ring \| Ring \| Snowboard \| Time Bonus \| Wisp Capsule
English voice actors		Roger Craig Smith (Modern Sonic) \| Mike Pollock (Classic Eggman, Modern Eggman) \| Kate Higgins (Classic Tails, Modern Tails) \| Travis Willingham (Knuckles) \| Cindy Robinson (Amy) \| Kirk Thornton (Shadow) \| Quinton Flynn (Silver) \| Laura Bailey (Blaze, Omochao) \| Karen Strassman (Rouge) \| Michelle Ruff (Cream) \| Keith Silverstein (Vector) \| Troy Baker (Espio) \| Colleen O'Shaughnessey (Charmy)
Japanese voice actors		Jun'ichi Kanemaru (Modern Sonic) \| Chikao Ōtsuka (Classic Eggman, Modern Eggman) \| Ryō Hirohashi (Modern Tails) \| Takuto Yoshinaga (Classic Tails) \| Nobutoshi Canna (Knuckles) \| Taeko Kawata (Amy) \| Kōji Yusa (Shadow) \| Rumi Ochiai (Rouge) \| Daisuke Ono (Silver) \| Nao Takamori (Blaze) \| Sayaka Aoki (Cream) \| Kenta Miyake (Vector) \| Yūki Masuda (Espio) \| Yōko Teppōzuka (Charmy) \| Etsuko Kozakura (Omochao)
Music	Songs	"Escape from the City" \| "You're My Hero"
Music	Albums	20 Years of Sonic Music \| Blue Blur: Sonic Generations Original Soundtrack \| History of the 1st Stage Original Soundtrack White Edition
Other		Sonic's birthday \| Boost Gauge \| Chao in Space \| Collection Room \| Combo \| Corkscrew loop \| Death Egg (Modern) \| Death Egg (Classic) \| Death Egg Robot \| Egg Dragoon \| Egg Gun \| Egg Mobile \| Egg Spear \| Havok \| Lair of the Time Eater \| Miles Electric \| Orca \| Perfect Bonus \| Rank \| Sonic Generations (manga) \| Sonic Generations of Skate \| Statue Room \| Time Hole \| Tornado-1 \| Totem pole \| White Space \| Winding Tunnel

[1] BradyGames (1 November 2011). Sonic Generations Official Strategy Guide. BradyGames. p. 163. ISBN 978-0744013429.

[1]