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The publishers page

Total: 18751 companies/individuals.

NUM | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
'R' Companies
Period
(Timeline)
Item #:
Game
Item #:
Non-Game
 R&B Soft. Marketing
1983 to 1984 (2 years)
 R&D Computer Co., Ltd. [Japan]
 R&E [Korea]
 R&H Microtec
1984 to 1990 (7 years)
 R&L Enterprises
 R&R Soft.
1982 to 1986 (5 years)
 R-Key
 R-Rate
1994 to 1995 (2 years)
 R. & R. Mfg. Co. [Benton Harbor, MI, USA]
 R. & S. Co. [New York, NY, USA]
 R. Franco [Recreativos Franco] [Madrid, Spain]
1973 to 2008 (36 years)
 R3 Interactive
 Rabbit Soft Worker's [Japan]
 Rabbit Soft.
1983 to 1985 (3 years)
 Raccoon [Japan]
1993 to 1994 (2 years)
 RacerMate
 Racet Computes
 Racing Services, Inc.
 Rack-It [012635]
1987 to 1989 (3 years)
 Rackley & Moore
 Racore
 Racz, Janos
 RAD [UK]
1987 to 1989 (3 years)
 Radar Games
 Radarsoft
1984 to 1986 (3 years)
 Radi-O-Nic Corp. [New York, NY, USA]
 Radiance Soft.
 Radica China Ltd.
1997 to 2008 (12 years)
 Radica Games
2000 to 2006 (7 years)
 Radical Ent.
 Radical Soft.
1993 to 1994 (2 years)
 Radio Bulletin
 Radio Chef, Inc. [Chicago, IL, USA]
 Radio Corp. of America [Camden, NJ, USA]
1932 to 1947 (16 years)
 Radio Matic of America Inc. [Indianapolis, IN, USA]
 Radio Shack [Fort Worth, TX, USA]
1976 to 1997 (22 years)
 Radioactive Cracking Crew
 Radiola La Radiotechnique [Paris, France]
1978 to 1983 (6 years)
 Radiomatic Corp. of NJ [Newark, NJ, USA]
 Radiontsev, Denis
 Radiotel Service Co. [Los Angeles, CA, USA]
 Radius
 Radofin Electronics [Germany]
1976 to 1984 (9 years)
 Rae, Kevin
 Rage
1998 to 2003 (6 years)
 Rage Soft., Ltd.
1992 to 1993 (2 years)
 Rahsennor & Frankengraphics
 Rai Soft.
 Raiders of the Lost Empire
1990 to 2011 (22 years)
 Railway Automatic Sales Co.
 Rain Ent.
 Rain Soft. [Japan]
 Rainbird [USA] [88777]
1986 to 1989 (4 years)
 Rainbird Soft. [UK] [012439]
1983 to 1991 (9 years)
 Rainbow Arts
1985 to 1999 (15 years)
 Rainbow Avenue Educational
 Rainbow Computing
 Rainbow Computing, Inc.
1978 to 1980 (3 years)
 Rainbow Crane, Inc. [Lecanto, FL, USA]
 Rainbow Games
 Rainbow Production
1985 to 1986 (2 years)
 Rainbow Vision
 Rainbow, The
 Rainy Frog
2014 to 2023 (10 years)
 Rainy Night Creations
 Raison [Japan]
1983 to 1989 (7 years)
 Rait Electornics [Christchurch, New Zealand]
1979 to 1982 (4 years)
 Raizing
1993 to 1996 (4 years)
 Rajsa
 Rakoko
 Rakos, Peter
 RAL
 Ralf
 Rally [Nice, France]
1961 to 1969 (9 years)
 Ralston Foods, Inc.
1996 to 1997 (2 years)
 RAM [Italy]
 Ram Electronics
 Ram-Tek Co.
 Rama-Soft.
 Ramamp Computers
 Ramar International Co., Ltd.
 Rambones
 Ramey, Gillaume
 Ramgang
1994 to 1996 (3 years)
 RamJam Corp., The
 Ramsdell Engineering Corp. [Baltimore, MD, USA]
 Ramsess Soft
1991 to 1992 (2 years)
 Ramtek Corp. [Sunnyvale, CA, USA]
1973 to 1979 (7 years)
 Ramtex
 Ramtop Retro [UK]
 Ramtop Soft.
 Ramtronics
 RAMTronics Soft.
 Ramware
1980 to 1981 (2 years)
 Rana Systems
 Ranco Automaten [Switzerland]
 RAND Corp.
 Rand, Jeremy
 Randall Co., A.L.
 Randall, Jr., Alfred H. [Philadelphia, PA, USA]
 Random Games
 Random House [Japan]
1985 to 1999 (15 years)
 Random House, Inc.
1981 to 1989 (9 years)
 Random Records
 RandomSpin
2018 to 2019 (2 years)
 Range Rider Co. [Kansas City, MS, USA]
 Ranger Computers
 Rankshigh
 Ranogajec, Mario
 Rantanplan [Germany]
 Raphnet
2021 to 2023 (3 years)
 Rapid Specialty Co. [Cedar Rapids, IA, USA]
 RapidEyeMovers
 RapidFire
1982 to 1983 (2 years)
 Rapidynamic Soft., Inc.
 Rappaport, Ethan
 Rapport [Japan]
 Rare, Ltd.
1987 to 1999 (13 years)
 Rare-Compedia, Inc.
 Rasa & Svec
 Rasa, Randy
1990 to 1995 (6 years)
 Rasputin
1993 to 1995 (3 years)
 Rassen [Korea]
 Rast & Son, Felix Q. [New York, NY, USA]
 Raster Team
 Raster, Ltd.
 Rastersoft
2000 to 2008 (9 years)
 Ratalaika Games
2016 to 2024 (9 years)
 Rathbun Bros.
 Rathsman, Ulf
1977 to 1978 (2 years)
 Ratio International
 Rational Solution, Ltd.
1985 to 1987 (3 years)
 Rats [Japan]
1994 to 1998 (5 years)
 Ratte, Andre
 Rauser
 Ravager's Reality
 Raven Adventures
 Raven Electronics
1966 to 1968 (3 years)
 Raven Micro Products
 Ravensburger Interactive
1998 to 2001 (4 years)
 Ravenscourt
2021 to 2023 (3 years)
 Raw Fury
2020 to 2023 (4 years)
 Raw Thrills [Skokie, IL, USA]
2004 to 2024 (21 years)
 Rawitsch & Heinemann & Dillenberger
 Ray [Espoo, Finland]
1986 to 2010 (25 years)
 Ray Corp. [Japan]
1993 to 1997 (5 years)
 Ray Force
1993 to 1999 (7 years)
 Ray, John A. [Kissimmee, FL, USA]
 Ray2Day MSX Soft.
2010 to 2021 (12 years)
 Raya Systems
1992 to 1995 (4 years)
 Raya, Luis Mezquita
1984 to 1986 (3 years)
 Raybould, Simon
1990 to 1991 (2 years)
 Rayglo Mfg. Co.
 Raylight Studios
 Raymond, Herbert
 Raytheon Corp.
 Rayzorsoft
 Razoola
 Razor 1911
1985 to 1995 (11 years)
 Razor Productions
 Razorsoft, Inc. [Oklahoma City, OK, USA]
1990 to 1992 (3 years)
 RB Soft. [RetroBörsen]
 RB Soft. [Spain]
 RBB Soft. Products
 RBF Soft.
1991 to 1996 (6 years)
 RBM Soft.
 RBS [ReBelS]
1993 to 1995 (3 years)
 RC Simulations
 RCA
 RCA Corp. [USA]
1975 to 1984 (10 years)
 RCA Laboratories
1967 to 1969 (3 years)
 RCA Victor [USA]
 RCA Video Jeux [France]
 RCC
 RCL Soft.
 RCM Group
1990 to 1991 (2 years)
 RCMadiax
2014 to 2017 (4 years)
 RCS
 RD Foord Soft.
1984 to 1988 (5 years)
 RD Laboratories
 RDA Corp. [Russia]
1991 to 1994 (4 years)
 RDI Video Systems
 Re-El [Italy]
 React [015103]
 React Soft.
 Reader's Digest Soft.
1980 to 1984 (5 years)
 Ready to Run CD-ROM, Inc.
 ReadySoft, Inc. [Canada]
1987 to 1996 (10 years)
 Reaktor [UK]
1986 to 1987 (2 years)
 Real Time Soft.
 Real-Time Engineering Systems, Ltd.
 Realcompu, Inc.
 Realities.io
 Reality Crisis Oy
 Realsoft
1991 to 1995 (5 years)
 Realtec Corp.
1992 to 1995 (4 years)
 Realtek
2001 to 2002 (2 years)
 Realtime
 Realtime Associates
 Realtime Games Soft., Ltd. [UK]
1984 to 1986 (3 years)
 Realty Soft.
 Ream, Mark
 Reanimators
 Rebel Vision
 Rebeliants, The
 Rebellion
2020 to 2022 (3 years)
 Rebels
1988 to 1999 (12 years)
 Rebelsoft.
 Reben S.A. [Spain]
1981 to 1983 (3 years)
 Rebit Computer
1982 to 1984 (3 years)
 Reboot
 Rebound [012635]
1986 to 1989 (4 years)
 Rebufa Co.
 Recel, S.A. [Madrid, Spain]
1974 to 1984 (11 years)
 Recker, R.L.
 Recotechnology S.L.
 Recreation Re-Creation Soft.
 Recreational Games
 Recreational Technology
 Recreativos Acrismatic
 Recreativos AF, S.A.
 Recreativos Covadonga [Spain]
 Recreativos Ensanche, S.L.
 Recreativos G.R.
 Recreativos Matencio, S.A.
 Recreativos Ojeda, S.A.
 Recreativos Presas, S.L. [Spain]
2000 to 2005 (6 years)
 Recreativos Romagosa, S.A.
 Red Art Games
2022 to 2025 (4 years)
 Red Baron Amusements [Australia]
 Red Barrels
 Red Bullet Soft.
 Red Column
 Red Corp.
 Red Dragon
 Red Flagship
 Red Gaming, Ltd. [Barcrest Group] [Birmingham, England]
2003 to 2011 (9 years)
 Red Orb Ent. [The Learning Co.]
1997 to 1999 (3 years)
 Red Rake Tech. SL
2019 to 2020 (2 years)
 Red Rat Soft.
1985 to 1989 (5 years)
 Red Seal Peanut Vending Co. [New York, NY, USA]
 Red Shift
1983 to 1985 (3 years)
 Red Star Sanitary Vending Machine Co. [Davenport, IA, USA]
1904 to 1917 (14 years)
 Red Storm Ent.
1998 to 2001 (4 years)
 Red Sun Systems
2021 to 2022 (2 years)
 RED Sunshine
 Red Tiger Gaming, Ltd.
 Red Triangle
2015 to 2019 (5 years)
 Red-Green-Blue Soft.
 Red5
 Redco Products Corp. [La Cross, WI, USA]
 Redefine Keys
 Redgrave, M. [Jersey City, NY, USA]
1871 to 1902 (32 years)
 Rediffusion
 Redpoint
1986 to 1987 (2 years)
 Redpoint Systems
 Redvers Developments
 Redwood Designs
1988 to 1995 (8 years)
 Redwood Games
 Redwood Publishing
1986 to 1989 (4 years)
 Reed Soft., Inc.
 Reedy Soft.
1985 to 1989 (5 years)
 Reef Ent., Ltd.
2005 to 2024 (20 years)
 Reel Profits, Inc. [Englewood, CO, USA]
 Reel-O-Ball Co. [Dayton, OH, USA]
 Reelax Games
1984 to 1986 (3 years)
 Reeve Soft.
 ReFinders [Highland Park, IL, USA]
 Reflections Soft.
 Reflex Cracking Squad
1986 to 1998 (13 years)
 Reflex Gaming, Ltd.
 Reflex Soft. Developments
 Regal Mfg. Co. [Whitewater, WI, USA]
1947 to 1950 (4 years)
 Regal Products Co. [WI, USA]
 Regama, S.A.
 Regency Electronics
 Regents of the University of California, The
 Regents/ALA Co., The
1984 to 1985 (2 years)
 Regina
1993 to 1994 (2 years)
 Regina Music Box Co. [Rahway, NJ, USA]
1902 to 1915 (14 years)
 Regnecentralen
 Reichert, Richard [Dresden, Germany]
1925 to 1930 (6 years)
 Reid Slot Machines, G.H. [Cleveland, OH, USA]
 Reid Soft.
 Reighard Jr. [Kenneth Reighard Jr.]
 Reilan
 Reimer & Laucke-Siemens
 Reiner's Public Domain
 Reiner, Pelzer & Co.
 Reisinger Machine Works, Inc. [USA]
 Reitz, J. [Düsseldorf, Germany]
1951 to 1960 (10 years)
 Rejet [Japan]
 Reki [Japan]
 Rektum
 Relax Gaming
 Relevo Videogames [Spain]
2009 to 2020 (12 years)
 Reliable Coin Machine Exchange [Chicago, IL, USA]
 Reliable Confections [Chicago, IL, USA]
 Reliable Engineering Co. [Chicago, IL, USA]
 Reliable Metal Engineering Co. [Chicago, IL, USA]
 Reliable Nut Co. [Los Angeles, CA, USA]
 Reliable Vending Machine Co. [Los Angeles, CA, USA]
 Reliance Mfg. Co. [New Haven, CT, USA]
 Reliance Novelty Co. [San Francisco, CA, USA]
1896 to 1898 (3 years)
 ReLINE
1987 to 1992 (6 years)
 Relion Soft.
 Relish
 Relisys
 REM
 Rem Co. [Japan]
 REMA, S.A.
 Remco
 Remex
 Remimory
 Remington Service-Machines, Inc. [Ilion, NY, USA]
 Remsoft Systems
1983 to 1990 (8 years)
 Renaissance Learning, Inc.
2006 to 2012 (7 years)
 Renaud, Emile
 Renault S.A.
 Renegade Soft.
1990 to 1996 (7 years)
 Rennert Novelty Co. [Detroit, MN, USA]
 Rennotte [Gembloux, Belgium]
1956 to 1958 (3 years)
 Reno Soft
 Renouf Mfg. Corp. [Chicago, IL, USA]
 Renovation Products [USA]
1990 to 1993 (4 years)
 Rensoup
 Rentacom
 René Pierre [Chalon-sur-Saône, France]
1955 to 1980 (26 years)
 Repeatoscope, Inc. [New York, NY, USA]
 Repixel8
 Replay
1995 to 1996 (2 years)
 Replica Copy Crew
 Reppman & Schade [Germany]
 Reppmann [UK]
 Repro Factory
2015 to 2018 (4 years)
 Reprosoft
 Repstad Computer Consultants
 Rero Rero
 Resch & Kemp & Hagstrom
 Research Data Systems
 Research Machines, Ltd.
1978 to 1990 (13 years)
 Research Technology Canberra
 Research, Inc.
 Reservoir Gods
 Reset Media AB
 Resolution Games AB
2023 to 2024 (2 years)
 Resource
1988 to 1989 (2 years)
 Respondesign
 Reston Publishing
1982 to 1983 (2 years)
 Reston Soft.
1983 to 1984 (2 years)
 Results Oriented
 Retco Mfg. Co. [Mose Lake, WA, USA]
 Retereale Srl [Italy]
2009 to 2012 (4 years)
 Retlaw Co.
 Retro DeLuxe
 Retro Fusion
 Retro Hardware
 Retro Pinball LLC [USA]
 Retro Soft.
2009 to 2017 (9 years)
 Retro USB
2014 to 2015 (2 years)
 Retro-Bit
2016 to 2020 (5 years)
 Retrobytes Productions
2005 to 2016 (12 years)
 RetroClinic
2009 to 2010 (2 years)
 Retrocoding Production
 Retrogames Computing
 RetroGenesis
 Retroism
 Retrones Soft.
 RetroSouls
2011 to 2022 (12 years)
 Retrotainment Games
2016 to 2017 (2 years)
 Retrotopia
 RetroUSB
2012 to 2023 (12 years)
 RetroWorks
2008 to 2021 (14 years)
 RetroZone
2007 to 2014 (8 years)
 RETZ [France]
1989 to 1991 (3 years)
 Reuters
 Revco, Inc. [Deerfield, MI, USA]
 Reveal Computer Soft.
1993 to 1994 (2 years)
 Revelation Soft.
1990 to 1994 (5 years)
 Revelstone
 Reverge Labs
 Revie Studios
 Revista Senha Pôster
 Revival Studios
2003 to 2012 (10 years)
 Revo [Tokyo, Japan]
 Revulo Games
 Rewind
 Rex Cigar Vending Co. [Washington, DC, USA]
1899 to 1900 (2 years)
 REX Ent.
 Rex Mfg. & Sales Corp. [Syracuse, NY, USA]
1944 to 1945 (2 years)
 Rex Mfg. Co. [Erie, PA, USA]
 Rex Novelty Co. [Chicago, IL, USA]
1923 to 1937 (15 years)
 Rex Soft. [China]
 Rex-Datentechnik
1985 to 1988 (4 years)
 Reynolds, Ginnie & Tom
 Reynolds, William
 RFC2795, Ltd.
2016 to 2020 (5 years)
 RFT-VEB Funkwerk [Erfurt, Germany]
1964 to 1965 (2 years)
 RGB [Japan]
1989 to 1991 (3 years)
 RGB Electronics
 RGCD
2011 to 2012 (2 years)
 RH Electronics
1983 to 1984 (2 years)
 RH Soft
1982 to 1986 (5 years)
 Rhein-Main-Soft
1994 to 1995 (2 years)
 Rheinland
 Rhiannon Soft.
1983 to 1985 (3 years)
 Rhinosoft
 Rhodes [UK]
 Rhodes, John W.
 RHS
 Ri.Bi
 Rialto Sales Co. [Chicago, IL, USA]
 Ribori, S.A.
 Rich's
 Rich, John G. [Auburn, NY, USA]
 Rich, Wilfrid B. [USA]
 Richard Mfg. Co.
 Richard Wilcox Soft.
 Richards, R.C. [UK]
 Richardson Computers, John
 Richie, Arthur J. & Jamison., Albert W. [Toledo, OH, USA]
 Richin [Germany]
 Richter & Co., F.A. [Rudolfstadt, Germany]
 Richter, Helmut
 Richuang Technology Dev. Co., Ltd. [Guangdong, China]
2008 to 2010 (3 years)
 Richvale Telecommunications
1982 to 1984 (3 years)
 Richwine & Co.
 Rick
1999 to 2003 (5 years)
 Ricochet [Mastertronic Group] [UK]
1984 to 1988 (5 years)
 Ride & Show Engineering, Inc.
 Ridgewood Ind., Ltd. [Montreal, Canada]
 Rief Games
 Riemer, Eugen [Chemmitz, Germany]
 Riff Raff Games
2010 to 2011 (2 years)
 Riggle & Wang
 Riggle, David
 Right Brothers, The
 Right Nut Games
 Right Stuff Corp. [Japan]
1991 to 1998 (8 years)
 RighteousWeasel
 Rigter, Wilf [Canada]
 Riki [Japan]
 Riki [Slovakia]
1995 to 1996 (2 years)
 Riko Data [Sweden]
1982 to 1983 (2 years)
 Riley Leisure
 Rimox Soft., Stan
 Ringblack Soft.
 Ringer Bell [Japan]
1993 to 1994 (2 years)
 Ringo Mfg. Co.
 Ringrose, M.W.F.
 Ringzero Games
 Rino Marketing, Ltd.
1985 to 1986 (2 years)
 Riot [Japan]
1991 to 1992 (2 years)
 Riot Forge
2023 to 2024 (2 years)
 Riou, Yoann
2001 to 2004 (4 years)
 Ripcord Games
1997 to 1998 (2 years)
 Ripped-Off
1990 to 1997 (8 years)
 Ripples Asia Venture
 Ripstone
 Riruhi's Party [Japan]
 RISC Dev.
1990 to 1993 (4 years)
 Rising Star Games, Ltd. [UK]
2005 to 2020 (16 years)
 Riska H&P
1986 to 1987 (2 years)
 Ristanovic, Dejan
 Ristaucrat Mfg. Co. [Kaukauna, WI, USA]
1931 to 1951 (21 years)
 Ritam Corp.
1980 to 1987 (8 years)
 Ritas do Brasil, Ltda.
 Ritsushi Shisutemurisaachi [Japan]
 Ritter-Walsh Co. [Chicago, IL, USA]
 Rittor Music [Japan]
 Rival
 Rival Dreams, Inc.
2002 to 2003 (2 years)
 River Soft.
1987 to 1993 (7 years)
 Riverbank Soft.
 Riverdale
 Riverhill Soft. [Japan]
1984 to 1999 (16 years)
 Riverside Soft.
 Riviera
 Rix Soft. [Japan]
 RJ-Soft
 RJBest [Ryan Best]
 RJC
 RK West Consulting
 RKS Project
 RL Soft.
 RM Soft. [Ron Mitchell]
 RMC Soft.
 RMG [Renato Montanari Giochi] [Bologna, Italy]
1970 to 1976 (7 years)
 RMH Enterprises
1979 to 1983 (5 years)
 RML Soft
 RMW Soft.
 RO Soft.
1984 to 1988 (5 years)
 Ro-Bo Sales Corp. [Portland, OR, USA]
 Roast, Kevin
 Robbins & Co. [London, England]
1894 to 1913 (20 years)
 Robbins & Co., D. [Brooklyn, NY, USA]
1927 to 1941 (15 years)
 Robby
 Robco Corp. [New York, NY, USA]
 Roberson
1967 to 1968 (2 years)
 Roberto Sport [Italy]
 Roberts Mfg. Co., F.W. [Lockport, NY, USA]
 Roberts Novelty Co. [Utica, NY, USA]
 Roberts, Otis A. [Oklahoma City, OK, USA]
 Robertson [UK]
 Robertson, Stephen
 Robichaux, Joey
 Robico Soft.
1984 to 1988 (5 years)
 Robinson Novelties, Earl A. [Providence, RI, USA]
 Robinson Partners, Ltd. [London, England]
 Robinson, Peter
 Roblox Corp.
 Robo Systems
 Robocom
1984 to 1985 (2 years)
 RoboNES
 ROBOsoft
 RoboSoft [Netherlands]
2021 to 2022 (2 years)
 Robot Ent.
 Robot Instrument Co. [Cleveland, OH, USA]
 Robot PD
1990 to 1998 (9 years)
 Robotic Amusements, Inc.
 Robotron [Germany]
1978 to 1987 (10 years)
 Robson, Charlie
 Robson, Paul
1997 to 2014 (18 years)
 Robtek
1986 to 1987 (2 years)
 Robylu
 Roc-A-Rides Sales [Philadelphia, PA, USA]
 Rocassoft Corp
 Rocco
 Roche Novelty Co. [Fort Wayne, IN, USA]
 Rochester Users Group
 Rochester, C.
 Rock-Ola Mfg. Co. [Chicago, IL, USA]
1926 to 1931 (6 years)
 Rock-Ola Mfg. Corp. [Chicago, IL, USA]
1930 to 1999 (70 years)
 Rockersuke Moroboshi
 Rocket Amusements
 Rocket Co. [Japan]
2003 to 2005 (3 years)
 Rocket Games
2000 to 2001 (2 years)
 Rocket Gaming Systems
1999 to 2015 (17 years)
 Rocket Science Games
1994 to 2004 (11 years)
 Rocket Vulture
 Rockfish Games
 Rockford
1990 to 1997 (8 years)
 Rockroy
1981 to 1982 (2 years)
 Rockstar Games
1999 to 2022 (24 years)
 Rockwell
1974 to 1981 (8 years)
 Rocky
2008 to 2009 (2 years)
 Rocsoft
 Rod Radio Mfg Co. [Chicago, IL, USA]
 Rodenberg & Dosland
 Rodeo Corp. [Japan]
2000 to 2017 (18 years)
 Rodmar Elec. [Spain]
1980 to 1982 (3 years)
 Rodney, Fred [Brooklyn, NY, USA]
 Rodriguez, Ralph A.
 Roehrig, Joseph
 Roeske [Germany]
1983 to 1985 (3 years)
 Roever, Julius [Brooklyn, NY, USA]
 Rogalandsdata Programvare
 Roger Soft
 Rogers Majestic
 Rogers Mfg. Co. [New York, NY, USA]
 Rogers Verybest Mfg. Co. [New York, NY, USA]
1909 to 1910 (2 years)
 Rogers, Ian J.
 Rogers, Jack
1959 to 1961 (3 years)
 Roginsky Games
 Roginsky, Al
 Rogue Games
2022 to 2024 (3 years)
 Rogue Systems
 Rogueside
 Rohde, William & Mueller, Edward V. [Cincinnati, OH, USA]
 Rohr Sales Co. [Detroit, MI, USA]
1941 to 1942 (2 years)
 Rohrs, M.
 Roklan
1981 to 1984 (4 years)
 Rola-Ball Vending Machine Co. [St. Louis, MO, USA]
 Roland
1980 to 1997 (18 years)
 Roll-O-Matic, Inc.
 Rolland, Christian
 Roller Tron Corp., Ltd.
1982 to 1988 (7 years)
 Rollet S.A. [France]
 Rom Kikaku
 Romancha
 Romanchuk, Robert
 Romand, P. [Paris, France]
1910 to 1914 (5 years)
 Romanow, Lee
2010 to 2019 (10 years)
 Romans, John G.W. & Grover, Albert D. [Malden, MS, USA]
 Romantic Robot UK
1984 to 1989 (6 years)
 Romar, Ltd. [Toronto, Canada]
 Rombax Games
2010 to 2011 (2 years)
 Rombest
 Rombo Productions
1986 to 1991 (6 years)
 Romburner Dev.
 Romco & Associates, Inc. [Minneapolis, MN, USA]
 Romero, John
 Romero, Pedro
 Romhack
 Romik Soft., Ltd.
1982 to 1985 (4 years)
 Romox [Japan]
1986 to 1987 (2 years)
 Romox, Inc. [Campbell, CA, USA]
1982 to 1984 (3 years)
 Romstar, Inc. [USA]
1985 to 1996 (12 years)
 Romtec Co., Ltd.
1982 to 1998 (17 years)
 Romware GmbH
1994 to 1995 (2 years)
 Rondomedia
 Rondreux, G. [Moulins, France]
 Ronica
 Ronin Soft.
 Ronin Wolf Corp.
2023 to 2024 (2 years)
 Roolandoo
2021 to 2022 (2 years)
 Roovers Bros. [Brooklyn, NY, USA]
1892 to 1905 (14 years)
 Roovers Bros., Inc. [Brooklyn, NY, USA]
 Roper, Bill
 Roplenet [Korea]
 Rordort, J.
 Roronworld [Japan]
 Rose Cassettes
1981 to 1982 (2 years)
 Rose City Importing Co. [Portland, OR, USA]
 Rose Co.
 Rose Soft.
1981 to 1984 (4 years)
 Rosen, Inc., David [Philadelphia, PA, USA]
1947 to 1967 (21 years)
 Rosendust, Leonard
 Rosenfield Mfg. Co. [New York, NY, USA]
1894 to 1908 (15 years)
 Rosenkranz, Walter [Leipzig, Germany]
1930 to 1954 (25 years)
 Ross Soft.
 Rossmoeller [Germany]
 Rossmoller
 Rossware
1985 to 1987 (3 years)
 Rosy Electronics
 Rota, Szabolcs
 Rotech [Paris, France]
 Roth & Langley
 Roth, Clayton
 Roth, J.M. [Brooklyn, NY, USA]
 Roth, Jacques
 Roth, Marek
1990 to 2012 (23 years)
 Roth, Olaf
1992 to 1998 (7 years)
 Roth, Olaf & Rolf & Marek
 Roth, Rolf
 Rothschilds & Sons, R. [New York, NY, USA]
 Rotor Table Games, Inc. [New York, NY, USA]
 Rotrimar, S.A.
 Rotuor Co.
 Roulette Clock Co. [Chicago, IL, USA]
 Round&Round Production
1994 to 1997 (4 years)
 Roundvision Corp. [Japan]
 Routley, Kevin
1990 to 1991 (2 years)
 Rover Leisure Products Co.
 Rovio Ent. Corp.
2013 to 2019 (7 years)
 Rowamet
1982 to 1983 (2 years)
 Rowan
 Rowe International, Inc. [Whippany, NJ, USA]
1967 to 1979 (13 years)
 Rowe Mfg. Co., Inc. [USA]
1935 to 1966 (32 years)
 Rowe Vending Machine [Los Angeles, CA, USA]
 Rowland & Son, A. [London, England]
 Rowland, Garry
1984 to 1992 (9 years)
 Rowley & Co.
 Rowtron
1979 to 1981 (3 years)
 Roxor Games, Inc.
2004 to 2007 (4 years)
 Roy Abel & Associates
 Roy Stringer Co., Ltd. [Indianapolis, IN, USA]
 Royal Ambassador Soft.
 Royal Amiga Force
1990 to 1991 (2 years)
 Royal Bell, Ltd.
1985 to 1996 (12 years)
 Royal Cabinet Works
 Royal Card Machine Co. [San Francisco, CA, USA]
 Royal Casino Antiques
 Royal Denshi
 Royal Electronics [Korea]
 Royal Engineering Co. [Inglewood, CA, USA]
 Royal Gum Co.
 Royal Kougyou
 Royal Mfg. Co. [Jersey City, NJ, USA]
 Royal Mfg. Co. [San Francisco, CA, USA]
 Royal Novelty Co. [Baltimore, MD, USA]
1932 to 1933 (2 years)
 Royal Novelty Co. [Indianapolis, IN, USA]
1921 to 1930 (10 years)
 Royal Novelty Co. [San Francisco, CA, USA]
1902 to 1907 (6 years)
 Royal Scale Co. [Jersey City, NJ, USA]
 Royal Swapping Force
 Roybot
1984 to 1988 (5 years)
 Royco
 Rozsavolgyi, Zoltan
 RPA Systems, Inc. [Madrid, Spain]
1985 to 1986 (2 years)
 RS Co., Ltd.
2006 to 2010 (5 years)
 RSE Soft.
 RSI [Red Sector, Inc.]
1987 to 1994 (8 years)
 RSoft
1983 to 1986 (4 years)
 RSP, Inc.
 RSPD
 RTG [RealTime Gaming]
 RTL Games GmbH
2008 to 2009 (2 years)
 RTL Playtainment
2002 to 2007 (6 years)
 RTL Sports
 Rubenking, Neil J.
 Rubicon Dev.
2011 to 2018 (8 years)
 Rubicon Publishing
 Rubini Cigar Co. [Chicago, IL, USA]
 Rubio Y Gaytan, S.A.
 Rubio, Javier Marco
1986 to 1987 (2 years)
 Rubusch, Heinz
 Ruby, Sam
1985 to 1990 (6 years)
 Rucksack Games
2016 to 2018 (3 years)
 Rudd-Melikian, Inc. [Philadelphia, PA, USA]
 Rudolph, Henry G. & Albert H. [Cleveland, OH, USA]
 Ruff Co., F.A. [Detroit, MI, USA]
1900 to 1904 (5 years)
 Ruffler & Walker
1949 to 1953 (5 years)
 Ruhr Automaten
1951 to 1952 (2 years)
 Rule, John A. [Mount Washington, OH, USA]
 Ruling Co., The
1988 to 2008 (21 years)
 Rumatic, S.A.
 Rumiano
 Run Informatique
 RUN-CW Communications
1983 to 1987 (5 years)
 RUN-IDG Communications
1988 to 1991 (4 years)
 Rune Soft
 Runesoft
1984 to 1986 (3 years)
 Running With Scissors
2023 to 2024 (2 years)
 Runstrad
1990 to 1991 (2 years)
 Runyon Sales Co. [Newark, NJ, USA]
1942 to 1948 (7 years)
 Rush Metal Co. [Lafayette, IN, USA]
 Rush Soft.
 Rushour Co. [Madison, WI, USA]
1928 to 1930 (3 years)
 Rushton, A.J.
 Rushware GmbH [Germany]
 Russel, Steve
 Russell, R.T.
 Ruston, Phil
1986 to 2012 (27 years)
 Rutherford, Rusty
 RWare, Inc.
 Rydquist, Adolph [Rochester, NY, USA]
 Ryede Specialty Works [Rochester, NY, USA]
 Rymsoft
 Ryoto Electric Co. [Japan]
 Ryouta Kikaku
 Ryullim [Korea]
 RZ Bologna