| Title | Games |
 | Radical Entertainment Location Unknown | 4 |
 | Rainbow Studios Location Unknown | 5 |
 | Rare Twycross, Leicestershire, UK | 22 |
 | Ratbag Games Adelaide, South Australia | 0 |
 | Radon Labs Berlin Germany | 1 |
 | Rage Software Liverpool UK | 0 |
 | Raven Software Madison, Wisconsin, USA | 6 |
 | Razorworks Oxfordshire, UK | 1 |
 | Real Time Associates Location Unknown | 0 |
 | Real Time Worlds Dundee, Scotland | 2 |
 | Rebel Act Location Unknown | 0 |
 | Rebellion UK | 4 |
 | Red Storm Entertainment Morrisville, NC, USA | 2 |
 | Reflections Interactive Location Unknown | 0 |
 | Relic Vancouver, Canada | 3 |
 | Remedy Entertainment Finland | 2 |
 | Replay Studios Hamburg, Germany | 2 |
 | responDESIGN Portland, OR | 0 |
 | Revolution Software UK | 0 |
 | Rockstar Games New York, USA | 4 |
 | Rockstar North Edinburgh, Scotland | 6 |
 | Rockstar San Diego San Diego, CA | 2 |
 | Ronin Entertainment Novato, CA | 0 |
 | Runecraft England, UK | 0 |
 | Reflexive Entertainment Location Unknown | 1 |
 | Red Tribe Location Unknown | 3 |
 | Rockstar Vancouver Location Unknown | 2 |
 | Revistonic Location Unknown | 1 |
 | Reality Pump Location Unknown | 2 |
 | Rubicon Development Location Unknown | 1 |
 | Rocksteady Studios Location Unknown | 6 |
 | Running Pixel Location Unknown | 2 |
 | Radar Group Location Unknown | 0 |
 | Recom Location Unknown | 1 |
 | Reiser Games Location Unknown | 1 |
 | ralph78fr Location Unknown | 2 |
 | Reality Pump Location Unknown | 1 |
 | Ruffian Games Location Unknown | 1 |
 | RedLynx Location Unknown | 3 |
 | Red Eagle Games Location Unknown | 0 |
 | RTL Location Unknown | 1 |
 | Robomodo Location Unknown | 5 |
 | RodYan Location Unknown | 1 |
 | rece Location Unknown | 1 |
 | RyoShinji Location Unknown | 1 |
 | Raccoon456 Location Unknown | 2 |
 | RIC Location Unknown | 1 |
 | reedake2 Location Unknown | 1 |
 | Regolith Games Location Unknown | 1 |
 | Running With Scissors Location Unknown | 1 |
 | Runic Games Location Unknown | 1 |
 | Reverge Labs Location Unknown | 1 |
 | Relentless Software Location Unknown | 3 |
 | Robot Entertainment Location Unknown | 1 |
 | Rovio Location Unknown | 13 |
 | Ronimo Games Location Unknown | 1 |
 | Regista Location Unknown | 1 |
 | Realta Entertainment Group Location Unknown | 1 |
 | R3dDr4g0n Location Unknown | 1 |
 | ReaperGamingStudios Location Unknown | 1 |
 | Rising Star Games Location Unknown | 0 |
 | RogueRocket Games Location Unknown | 3 |
 | Reef Entertainment Location Unknown | 0 |
 | Red Fly Studios Location Unknown | 1 |
 | Revo Solutions Location Unknown | 1 |
 | Respawn Entertainment Location Unknown | 1 |
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