All pages
- Infinite (song)
- Inn Sanity
- Inobuta Mecha
- Inside a Video Game Company - Sonic the Hedgehog 2 (Disney Adventures, October 1992)
- Insta-Shield
- Insta-shield
- Insta Shield
- Instruction/Manuals
- Interactive Disassembler
- Interceptor
- Interlaced
- Interview
- Interview: Chris Senn (2007-04-03) by Sega-16
- Interview: Chris Senn (2013-09-12) by Sega Addicts
- Interview: Craig Stitt (2001-01-23) by ICEknight
- Interview: Craig Stitt (2020-08-29) by Damiano Gerli
- Interview: David Javelosa (2008-07-02) by Sega-16
- Interview: David Javelosa (2023-12-09) by Alexander Rojas
- Interview: Don Goddard (2008-05) by hxc
- Interview: Don Goddard (2011-11) by Torentsu
- Interview: Faye Mata (2023-09-18) by Sega
- Interview: Howard Drossin (2009-09-22) by Gamasutra
- Interview: Ian Jones-Quartey (2023-08-09) by Sega
- Interview: Inugami Korone (2023-12-04) by Sega
- Interview: James Turner (2023-10-30) by Sega
- Interview: Jeremey Chinshue "TerminalMontage" (2023-08-21) by Sega
- Interview: Katie Chrzanowski (2023-08-28) by Game Informer
- Interview: Ken Balough (2009-09-08) by GameSpot
- Interview: Kim Isa (2023-11-06) by Sega
- Interview: Lapper (2019-08-15) by Sonic Stadium
- Interview: Matt Braly (2023-08-16) by Sega
- Interview: Mike Wallis (1996-05-04) by Game Players
- Interview: Mike Wallis (1996-06-20) by Sega Saturn Magazine (UK)
- Interview: Mike Wallis (2002-06) by Pachuka
- Interview: Mike Wallis (2007-06-19) by Sega-16
- Interview: Mike Wallis by Pachuka
- Interview: MrWaen (2023-08-28) by Sega
- Interview: Natália Dias (2023-11-13) by Sega
- Interview: Ninomae Ina'nis (2023-10-23) by Sega
- Interview: Peter Morawiec (2000-12-27) by ICEknight
- Interview: Peter Morawiec (2006-01-11) by hxc
- Interview: Peter Morawiec (2007-04-20) by Sega-16
- Interview: Roger Hector (2005-02-15) by Sega-16
- Interview: Shijueming (2023-09-13) by Sega
- Interview: Stieg Hedlund (2006-12-15) by Sega-16
- Interview: Takashi Yuda (2005-09-21) by GameSpy
- Interview: Takashi Yuda (2006-01-20) by GameSpy
- Interview: Takashi Yuda (2006-01-27) by GameSpy
- Interview: VOFAN (2023-11-27) by Sega
- Interview: Van Partible (2023-09-04) by Sega
- Interview: Yojiro Ogawa (2005-07-22) by GameSpy
- Interview: Yuji Naka (2005-09-30) by GameSpy
- Interview: Yuki Aoi (2023-11-20) by Sega
- Interviews
- Into the Wilderness
- Into the Wind
- Invincibility
- Invincibility monitor
- Invincible
- Invincible Barrier
- Invincible Protect
- Invision Power Board
- Iron Ambition
- Iron Boots
- Iron Fortress
- Iron Gate
- Iron Jungle
- Iron Ruin
- Isabella Mongoose
- Isao Okawa
- Isolated Island
- Isolated Island Badnik
- Isolated Soldier Shadow
- Isolation By Choice
- Isolation and Solitude
- It Doesn't Matter
- It Doesn't Matter (SA1)
- It Doesn't Matter (SA2)
- It Doesn't Matter (Sonic Adventure)
- It Doesn't Matter (Sonic Adventure 2)
- It Has Come to This
- It Takes One to No Place
- It Takes a Village to Defeat a Hedgehog
- It Wasn't Me, It Was the One-Armed Hedgehog
- Item Box
- Item Boxes
- Item Capsule
- Item Panel
- Item boxes
- Ivo Robotnik
- Iwamodoki
- Ix
- Ix (boss)
- Ix the Echidna
- Ixis Naugus
- J-Sky (50KB)
- J. Griff
- JEnesis
- JSH
- Jack Bommer
- Jackal Squad
- Jacky Bryant
- Jade Gully
- Jaleel White
- Jamal Peppers
- James Fry
- James Fry interview by Sonic HQ (April 11, 2000)
- James Pond II: Codename RoboCod
- Jamie Bible
- Japon Previews - Sonic Adventure (Consoles Plus)
- Jason Anthony Griffith
- Jason Griffith
- Jason Jensen
- Jason Kuo
- Jaws
- Jaws (Sonic the Hedgehog 16-bit)
- Jaws (Sonic the Hedgehog 8-bit)
- Jawz
- Jebediah Badger
- Jeff Powell
- Jehannenar
- Jellygnite
- Jenesis
- Jennifer Douillard
- Jeremy Cantor
- Jerome Wise
- Jessica Padkin
- Jester's Challenge
- Jet
- Jet Anklet
- Jet Booster
- Jet Engine
- Jet Glider
- Jet Mobile
- Jet Set Radio
- Jet the Hawk
- Jewel the Beetle
- Jeweled Scepter
- Jewelled Scepter
- Jim Amash
- Jim Cummings
- Jim Tretheway
- Jim Tretheway Interview by RyogaMasaki
- Jim Tretheway Interview by Ryoga Masaki
- Jim Tretheway interview by RyogaMasaki
- Jim Tretheway interview by RyogaMasaki (September 2000)
- Jimita
- Jimmy Zoppi
- Jin Shimazaki
- Jina Ishiwatari
- Jinya Ito
- Jirna
- Jiryoku Barrier
- Joe Sushi
- Joel MacMillan
- Joel MacMillan interview by GameSpot (September 3, 2008)
- John Duggan
- Johnny
- Johnny's Race
- Johnny Gioeli
- Johnny Lightfoot
- Johnny Lightfoot (Sonic the Comic)
- Johnny the Pirate
- Joji Nakata
- Jojo
- Jon Burton
- Jon Burton interview by Sega Saturn Magazine (October, 1997)
- Jon D'Agostino
- Jon St. John
- Jonathan Gray
- Jonathan López
- Jonny's Place
- Jose Casanovas
- Journey to Nihility
- Jousun
- Joypolis
- Judy Totoya
- Juggle Saw
- Juggling
- Julian Kintobor
- Julie-Su
- Julie-su
- Julien-K
- Jumble Jungle
- Jump Attack
- Jump Dash
- Jump Parade
- Jump Sentouin
- Jump Vehicle
- Jump dash
- Jump the Snake
- Jumping Combatant
- Jumping Soldier
- Jun'ichi Kanemaru
- Jun Senoue
- Jun Senoue Interview by LOst
- Jun Senoue interview by LOst
- Jun Senoue interview by LOst (June 2002)
- Jun Senoue interview by MelodicRock.com
- Jun Senoue interview by MelodicRock.com (February 2004)
- Jun Senoue interview by Rocketbaby.net
- Jun Senoue interview by Rocketbaby.net (July 2001)
- Jun Senoue interview by Sega.com (Feb 2002)
- Jun Senoue interview by Sega.com for Sega Scream
- Jun Senoue interview by Sega.com for Sega Scream (February 27, 2002)
- Jun Senoue interview by Sega.com for Sonic Heroes website
- Jun Senoue interview by Sonic Central
- Jun Senoue interview by Sonic Central (April 2004)
- Jun Senoue interview by StyleFactory.net
- Jun Senoue interview by T-bird (2006)
- Jun Senoue interview by T-bird (2010)
- Jungle Joyride
- Jungle Zone
- Jungle Zone (Sonic Jump)
- Jungle Zone boss
- Jungle Zone boss (Sonic Jump)
- Jungle cliché
- Junichi Kanemaru
- Junko Shiratsu
- Junpei Takiguchi
- Jupiter
- Juppun
- Jurassic Boy
- Jurassic Boy 2
- Just Review It - Sonic Spinball (Sega Visions, October-November 1993)
- Just a Guy
- Justice
- Justice Reborn in Space
- Justice’s Awakening
- Justin Gabrie
- Jōji Nakata
- KEH
- KENS
- KGEN
- KGen
- KGen-X
- KGen98
- KGen (series)
- Kabasira
- Kabutoto
- Kadokawa
- Kai
- Kaizoku Bomb
- Kaizoku Glider
- Kaizoku Gun
- Kaizoku Hogan
- Kaizoku Hover Bomb
- Kaizoku Hover Gunner
- Kaizoku Skeleton
- Kaizoku Snowball
- Kaizoku Sword
- Kalisto
- Kama-Kama
- Kamado Max
- Kamaki
- Kameka
- Kamemusi
- Kanabun
- Kani Pearl
- Kaori Hitsuda
- Kapupu
- Karen Strassman
- Karl Bollers
- Kart Kiki
- Kart Race
- Kate Higgins
- Kathleen Delaney
- Katie Chrzanowski
- Katsumi Yabuno
- Katsuyuki Konishi
- Kayzie Rogers
- Kazuhiko Hattori
- Kazuki Hayashi
- Kazuko Ito
- Kazuyuki Hoshino
- Kega
- Kega (emulator)
- Kega Fusion
- Kega Lazarus
- Keiichi Sugiyama
- Keiichi Yamamoto
- Keiichirou Miyoshi
- Keiji Okayasu
- Keiko Utoku
- Keith Palmer
- Keith Silverstein
- Kemusi
- Ken Ballough interview by Gamespot (September 8, 2009)
- Ken Penders
- Ken Penders interview by Sonic HQ (June 23, 1998)
- Kenichi Fujiwara
- Kenichi Koshida
- Kenichi Ono
- Kenichi Tokoi
- Kenjiro Morimoto
- Kensuke Kita
- Kent Hampton
- Kent Taylor
- Kenta Miyake
- Kerokero
- Keroyo
- Kevin Eva
- KiS2
- Kibaba
- Kick
- Kick The Rock
- Kick the Rock
- Kick the Rock!
- Kid's Gear
- Kid Chameleon
- Kids Computer Pico
- Kiel Phegley
- Kieran Gates
- Kiki
- Killer Bee
- Killer Plant
- Killer Turkey Gou
- Kilometers the Metric Fox
- King Arthur
- King Arthur (Faraway Avalon)
- King Arthur (Faraway Avalon Boss)
- King Arthur (Faraway Avalon boss)
- King Arthur (Misty Lake boss)
- King Boom Boo
- King Boom Boo (boss)
- King Of The Ring
- King Shahryar
- King Shahryār
- King of the Ring
- Kingdom Valley
- Kintobor
- Kip the Capybara
- Kirby in Sonic the Hedgehog
- Kirby in Sonic the Hedgehog 2
- Kirk Thornton
- Kit
- Kit the Fennec
- Kitsunami the Fennec
- Kitsune
- Klagen
- Klaus Lochthove
- Knickt
- Knight's Passage
- Knight Pawn
- Knight of the Wind