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Company name Description Games

Immortality production

 Cold Dreams

Impressions

Impression Software was founded in 1989. The company focused on strategy and business games including sport simulations. It was acquired by Sierra On-Line in 1995.
Caesar, Detroit, High Seas Trader, Caesar II, Air Force Commander, Ultimate Soccer Manager 2, WW2 Air Force Commander, Merchant Colony, Ultimate Soccer Manager, Air Bucks, Breach 3, Global Domination, Front Lines, The Charge of The Light Brigade, Fort Apache

Impulse Games, Inc.

 Funball

Incentive Software Ltd.

 Menace of Dr. Spoil Sport, Castle Master

Incredible Simulations, Inc.

 Custer's Last Command

Incredible Technologies, Inc.

Incredible Technologies is a US studio founded in July 1985 by Elaine Hodgson and Richard Ditton who previously worked at Action Graphics, Inc., a studio spun off from Bally Midway Manufacturing Co., Inc.. The company initially specialized in designing and manufacturing commercial/arcade entertainment development and they are best known for the Golden Tee Golf arcade series. Incredible Technologies developed Grave Yardage for Activision. in 1989. The staff's biographies in that game's manual show the range of design and development IT has done: arcade game design and Bally/Midway and Capcom; development of original games and/or conversion for Cinemaware, Epyx, Mindscape; pinball machine development for Data East; system design for Brunswick's BowlerVision system. While still creating games, the company also started releasing casino games and machines in 2008.
Harley Davidson - The Road to Sturgis, Disney's Duck Tales: The Quest for Gold

InFluid Software

 Haunted Childhood

Infocom, Inc.

Developer and publisher of interactive fiction games in the early 1980s. They were acquired by Activision in 1987.
A Mind Forever Voyaging, Enchanter, Wishbringer, James Clavells Shogun, Leather Goddesses of Phobos, Infidel, The Lurking Horror, Moonmist, Leather Goddesses of Phobos 2, Arthur: The Quest for Excalibur, Ballyhoo, Border Zone, Fooblitzky, Hollywood Hijinx

Infogrames Entertainment

Infogrames Entertainment was French company producing interactive games for PC and consoles. The company was founded in 1983 and eventually owned Atari, Inc. and Atari Europe.
Alone in The Dark, Alone in The Dark 2, Asterix & Obelix, North and South, Call of Cthulhu - Shadow of the Comet, Space Crusade

Infogrames Studios Limited

Gremlin was founded in 1984 by Ian Stewart, Sales and Marketing Director, and Kevin Norburn, the Financial Director. They originally opened a computer shop in Carver Street, Sheffield, called Just Micro. From there they branched out into a software house. Tony Crowther, already well known for a few Commodore programs was made a company director. Geoff Brown, of US Gold and who had just started Centresoft, was invited to become Managing Director.
Greg Norman's Shark Attack!: The Ultimate Golf Simulator, Nigel Mansell's World Championship Racing, Zool, Zool 2, Mindbender, Whiplash, Toyota Celica GT Rally

Information Access Technologies, Inc.

Developed Three-Sixty games in the early 1990s.
Armor Alley

Ingenuity Works, Inc.

 Cross Country Canada, Crosscountry USA

Inland International

 The Crusade

Inner Circle Creations

 Alien Rampage

InSide Team

 Rally Championships

Intel Corporation

 Memory Hog Hunter

IntelliCreations, Inc.

 Baker St 221

Intelligent Design Ltd.

 Vixen

Intelligent Games Ltd

Intelligent Games, Ltd. (IG) was a game development company founded in 1988 as The Intelligent Games Co. by Matthew Stibbe when he was 18 years of age. The name was changed to Intelligent Games, Ltd. in 1993 when it was incorporated. The company was located in west London, United Kingdom.
Dune 2000, Waterworld, Azrael's Tear

Interactive Binary Illusions

 Halloween Harry, Alien Carnage - Halloween Harry

Interactive Fantastic Fiction

 Crime City

Interactive Picture Systems Inc.

 Operation Frog

InterActive Vision A/S

 Airlines

Intergalactic Development Inc.

 Jack The Ripper, UMS II: Nations at War, UMS: The Universal Military Simulator

International PC Owners

IPCO was a user group for IBM PC owners, operating out of Pittsburgh, Pennsylvania and later Poland, Ohio, USA. The founders were two engineers and their wives, Jim and Cindy Cookinham and Steve and Windy Hart. The group's selection of software - which covered business, science, graphics, education, utilities and games - was put together from user contributions. For an annual membership due ($15 within the US, $20 for Canada and $45 worldwide, as of 1982), IPCO members were eligible to participate in the group's software exchange: submit a program to the IPCO catalog, and receive a diskette with 4 free programs of your choice. The catalog included 80 programs as of early 1983, and over 175 by July that same year; by mid-1984 the count had grown to over 300 programs (selling for $3 per program or $6 per disk), plus 20 compilation disks ($15 each). Other productions included the bimonthly "IPCO Info" newsletter, with information on PC hardware/software (including the emerging shareware/public domain arena), reader requests, tips, comments, and even gossip culled from BBS messages.
Rubik's Cube, Slot, Memory 1983

International Software Development Corp.

 Ports of Call

Interplay Entertainment Corp.

The company was founded by Brian Fargo in 1983. Stationed in Southern California, the company created marvelous titles like Fallout or Baldur's Gate. Even over the former success, the company eventually went bankrupt in 2004 and sold most of their intellectual property to other companies like Bethesda.
Battle Chess, Battle Chess 4000, Castles, Battle Chess - Windows, Dragon Wars, Neuromancer, Star Trek - Judgment Rites, Rags to Riches - The Financial Market Simulation, Lord of the Rings Vol I, Star Reach, Mindshadow, Battle Chess: Enhanced CD-ROM, Borrowed Time, Descent to Undermountain, J.R.R. Tolkien's The Lord of the Rings, Vol. II: The Two Towers

InterQuest Productions

 Hamsters

Interstel Corporation

Interstel Corporation was a company originally established as Cygnus by Trevor C. Sorensen. He had made a game for DEC computers called Starfleet in 1981 and the company was created to market Star Fleet I: The War Begins, an adaptation for home computers. Together with his partners the company was incorporated in 1986 to form Interstel Corporation and from then on the name Cygnus was no longer used. In the same year Interstel Corporation became an affiliated label of Electronic Arts. In 1988 one of Interstel's games, Empire: Wargame of the Century, was named as Computer Game of the Year by Computer Gaming World magazine. Star Fleet II: Krellan Commander was released in 1989. A hostile takeover bid forced Sorensen to sell his shares and leave Interstel in 1990, and the company ceased operation in 1992. Before that, many titles were released, developed in-house or by external teams. Sorensen's worked continued at Supernova Creations, a studio he co-founded in 1991.
Star Fleet II: Krellan Commander, Gone Fishing, Earthrise

IntraCorp, Inc.

A parent company of Capstone Software.
Grandmaster Chess, Terminator 2: Judgment Day—Chess Wars

IQ Games

 Tank Attack

Iron Byte

 Freddy Hardest in South Manhattan, Narco Police

Ishi Press International

 Go Simulator

Island Dream - Games & Soft

 The Last Knight, Hot Speed

J & J Gameware

 Double-X Slots

J and B Associates

 Mission Ufo - A Solar System Odyssey

J. P. Jansen

 Hamburger Hell

J.Shramko

 3D Pitfall

Jack Bean Ltd.

 Little Monk

Jacob Weinstein

 Toonesia

Jagware Inc.

 Alien Fires: 2199 AD

Jake Soft

 Operacja Glemp

Jaleco Ltd.

Jaleco Ltd., the parent company of Jaleco Entertainment, is a subsidiary of PCCW Limited, Hong Kong's dominant integrated communications company.
Cisco Heat - All American Police Car Race

James A. Sausville

 Flagger

Jared Tarbell

 Atomic Tetris

Jarrod Davis Software Company

 Astro3D

Jason Truong

 Turoid

Jeef Sember and Don Mattrick

 Evolve

Jeff Kintz

 The Dark Convergence, The Dark Convergence II, Dismal Passages: Part I - The Wicked Curse, Dismal Passages

Jeff Tunnell Productions

Jeff Tunnell Productions is a one-man casual/children's game developer founded by Jeff Tunnellin 1992. He was most notably the developer of the The Incredible Machine series. The last titles 3-D Ultra Pinball and The Incredible Machine 3.0 were released in 1995 before Dynamix took over later that year. Jeff Tunnell was also the founder of Dynamix at the time.
Mega Math, The Incredible Machine 2