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- Dong Gu Ri Te Chi Jak Jeon
- Donna De Lory
- Donna Jay Fulks
- Donut Lord
- Doodlebug Mecha
- Doom's Eye
- Doomsday
- Doomsday Zone
- Dorian Kieken
- Dorian Kieken interview by PALGN (September 6, 2008)
- Dorigame
- Double-word
- Double Boost
- Double Doomsday
- Double Pack: Sonic Advance & ChuChu Rocket!
- Double Pack: Sonic Battle & Sonic Advance
- Double Pack: Sonic Pinball Party & Sonic Battle
- Double Rivals Attack Pack
- Double Rivals Attack Pack!
- Double Spin Attack
- Double Trouble
- Double Trouble (episode)
- Downfall of the Crumbling Planet
- Download-only games featuring Sonic the Hedgehog
- Downloads
- Dr. Babble
- Dr. Crabulous
- Dr. Deep
- Dr. Eggman
- Dr. Eggman's Amazing Interstellar Amusement Park
- Dr. Eggman's Ambition
- Dr. Eggman's Number Guess Panic!
- Dr. Eggman's Tomato Sauce
- Dr. Eggman/Dr. Ivo Robotnik
- Dr. Eggman/Robotnik
- Dr. Eggman (Sonic the Hedgehog Triple Trouble boss)
- Dr. Eggman Appearance!
- Dr. Eggman Goes to War
- Dr. Eggman Nega
- Dr. Eggman’s Miscalculation
- Dr. Fukurokov
- Dr. Ian Droid
- Dr. Ivo "Eggman" Robotnik
- Dr. Ivo Robotnik
- Dr. Kintobor
- Dr. Nega
- Dr. Ovi Kintobor
- Dr. Robotnik
- Dr. Robotnik's Giant Mech
- Dr. Robotnik's Mean Bean Machine
- Dr. Robotnik's Mean Bean Machine/Bugs
- Dr. Robotnik's Mean Bean Machine/Comparisons
- Dr. Robotnik's Mean Bean Machine/Hidden content
- Dr. Robotnik's Mean Bean Machine/Magazine articles
- Dr. Robotnik's Mean Bean Machine/Manuals
- Dr. Robotnik's Mean Bean Machine/Region coding
- Dr. Robotnik's Mean Bean Machine/Technical information
- Dr. Robotnik's Mean Bean Machine (8-bit)
- Dr. Robotnik's Mean Bean Machine (8-bit)/Bugs
- Dr. Robotnik's Mean Bean Machine (8-bit)/Hidden content
- Dr. Robotnik's Mean Bean Machine (8-bit)/Magazine articles
- Dr. Robotnik's Mean Bean Machine (8-bit)/Promotional material
- Dr. Robotnik's Mean Bean Machine (8-bit) (Game Gear) US manual
- Dr. Robotnik's Mean Bean Machine (8-bit) (Master System) EU manual
- Dr. Robotnik's Mean Bean Machine (8-bit) EU Manual
- Dr. Robotnik's Mean Bean Machine (8-bit) bug list
- Dr. Robotnik's Mean Bean Machine (8-bit) magazine articles
- Dr. Robotnik's Mean Bean Machine (Game Gear)
- Dr. Robotnik's Mean Bean Machine (Game Gear) US Manual
- Dr. Robotnik's Mean Bean Machine (Game Gear) US manual
- Dr. Robotnik's Mean Bean Machine (Master System) EU Manual
- Dr. Robotnik's Mean Bean Machine (Prototype)
- Dr. Robotnik's Mean Bean Machine (prototype)
- Dr. Robotnik's Mean Bean Machine (prototype B)
- Dr. Robotnik's Mean Bean Machine magazine articles
- Dr. Robotnik's Ring Racers
- Dr. Robotnik and his Mean Bean Machine
- Dr. Starline
- Dr. Warpnik
- Dr. Yundong
- Dr. Yùndòng
- Dr. Zachary
- Dr. Zachary (scener)
- Dr Eggman
- Dr Fukurokov
- Dr Nega
- Dr Robotnik
- Dr Warpnik
- Dragfly
- Dragodon
- Dragogo
- Dragon
- Dragon's Lair
- Dragon Breath
- Dragon Canyon
- Dragon Road
- Dragon Slayer
- Dragonfly
- Dream Factory
- Dream Valley
- Dreamcast
- Dreamcast Controller
- Dreamcast Magazine (JP)
- Dreamcast Preview - Sonic Adventure 2 (Game Informer, July 2000)
- Dreamcast Zip Drive
- Dreamcast fishing controller
- Dreameye
- Dreams Come True
- Dreams Of An Absolution
- Dreams of an Absolution
- Dribbler
- Drift
- Drill Claw
- Drill Drive
- Drill Eggman
- Drill Eggman II
- Drill Mobile
- Drill Mole
- Drill Spin Attack
- Drill Spin Boost
- Drillerdroid
- Drillin
- Drillinator
- Drillshark
- Drisame
- Drood Henge
- Drop Dash
- Drop dash
- Dry Lagoon
- DualGens
- Dual Pack: Sonic Advance & Sonic Pinball Party
- Dual Towers
- Dubious Depths
- Dude, Where's My Eggman?
- Duke of Soleanna
- Dulcy
- Dulcy (episode)
- Dulcy the Dragon
- Dummy Ring Blitz
- Dummy Ring Bomb
- Dummy Ring Snipe
- Duncan Gutteridge
- Dunesday
- Dunesday (transcript)
- Duo Pack: Sonic Heroes/Super Monkey Ball 2
- Duplichaos
- Dust Hill
- Dust Hill Zone
- Dust Hill Zone (fan game)
- Dustin Wyatt's Epic Adventure
- Dusty Desert
- Dyed in Lovely Darkness...
- Dynamight
- Dynamite Dux
- Dynamite Plant
- Dynamo Cage
- E-01 Baby Kiki
- E-02 Rhino-Tank
- E-02 Rhinotank
- E-03 Sweep
- E-04 Leon
- E-05 Boa-Boa
- E-06 Bladed Spina
- E-06 Bladed Spinner
- E-07 Ice Ball
- E-08 Kart Kiki
- E-09 Buyon
- E-100
- E-1000
- E-10000B
- E-10000G
- E-10000R
- E-1001
- E-1001 Egg Pawn
- E-1002 Egg Flapper
- E-1003 Cameron
- E-1004
- E-1004 Klagen
- E-1005 Egg Knight
- E-1006 Egg Hammer
- E-1007 Heavy Egg Hammer
- E-1008 Falco
- E-1009 Egg Bishop
- E-100 Alpha
- E-100 Series
- E-100 Zero
- E-100 series
- E-101
- E-1010 Egg Magician
- E-1011 Casino Pawn
- E-1012 Rhino Liner
- E-101 Beta
- E-101 Kai
- E-101 β
- E-101 β (Boss)
- E-101 β (boss)
- E-101mkII
- E-101β
- E-101βmkII
- E-102
- E-102 "Gamma"
- E-102 "γ"
- E-102 Gamma
- E-102 Gamma's Story Screen Script
- E-102 γ
- E-103
- E-103 Delta
- E-103 δ
- E-103δ
- E-104
- E-104 Epsilon
- E-104 ε
- E-104ε
- E-105
- E-105 Zeta
- E-105 ζ
- E-105ζ
- E-10 Cop Speeder
- E-121
- E-121 Phi
- E-121 Φ
- E-123
- E-123 "ω"
- E-123 Omega
- E-123 Ω
- E-16 Thunder Spina
- E-17 Ghora
- E-19 Egg Keeper
- E-2000
- E-2000R
- E-20 Kiki
- E-20 series
- E-22 Beat
- E-32 Unidus
- E-Series
- E-Series Robots
- E-Series robots
- E-series
- E-series robots
- E.G.G.M.A.N.
- E.G.G. Station
- E.G.G. Station Zone
- E.G.G. Station Zone Final Boss
- E.G.G Station
- E.G.G Station Zone
- E02
- E3
- E3 1996
- EEZ
- EE Badnik
- EFZ
- EGG-HVC-001
- EGG-HVC-D01
- EGM Update! - Sonic the Hedgehog 2 (Electronic Gaming Monthly, October 1992)
- EHZ
- ELSPA
- EMZ
- ENAE
- EPROM
- ERZ
- ESE
- ESEII
- ESE ASM Edit
- ESE FixCheckSum
- ESRA
- ESRB
- ESZ
- EUZ
- EVG 2000
- EX Stages
- EX World Grand Prix
- EZweb (BREW 2.1)
- EZweb (BREW 3.1)
- Early Sonic the Hedgehog cartoon
- Earth
- Earth Quake
- Earthia
- Ebony
- Ebony the Cat
- Ecco the Dolphin
- Echelon
- Echidna
- Echidnas
- Echo
- Eclipse Cannon
- Edge connector
- Edit mode
- Edmund
- Edusoft
- Edwin Neal
- Eeliotte
- Egg-Cerberus
- Egg-Genesis
- Egg-Go-Round
- Egg-O-Matic
- Egg-Wyvern
- EggHammerTank II
- EggNet
- EggRobo
- Egg & the Chicken
- Egg Albatross
- Egg Armor
- Egg Ball
- Egg Ball No.2
- Egg Balloon
- Egg Beetle
- Egg Bishop
- Egg Blizzard
- Egg Bomber
- Egg Bomber Tank
- Egg Bombers
- Egg Bommer
- Egg Booster
- Egg Breaker
- Egg Bubble
- Egg Bull
- Egg Burst
- Egg Buster
- Egg Cannon
- Egg Capsule
- Egg Carrier
- Egg Carrier (Sonic Adventure)
- Egg Carrier Battle
- Egg Cauldron
- Egg Cerberus
- Egg Chase
- Egg Chaser
- Egg Chaser (Sonic Advance 3)
- Egg Claw
- Egg Commander
- Egg Conveyor
- Egg Crawler
- Egg Crusher
- Egg Cube
- Egg Dealer
- Egg Dealer (Sonic Rivals 2)
- Egg Destroyer
- Egg Devil Ray
- Egg Digger
- Egg Dragoon
- Egg Dragoon (Sonic Forces boss)
- Egg Dragoon (Sonic Generations boss)
- Egg Drillster
- Egg Drone
- Egg Eagle