| r-type | 33 | R-Type | Video game series |
| raccoons | 22 | Raccoons | Creatures themes |
| racechoice | 31 | Race choice | Other concepts |
| racing | 88 | Racing | Activities themes |
| racinggame | 644 | Racing | Game genre themes |
| racism-speciesism | 34 | Racism / speciesism | Culture concepts |
| racoons | 1 | n.a. | |
| racquetball | 5 | Racquetball | Sport themes |
| racquetsports | 315 | Racquet sports | Sport themes |
| radar | 410 | Radar | Tools entities |
| radar-imperfect | 4 | Imperfect radar | Tools themes |
| radarjammers | 7 | Radar jammers | Other entities |
| radarscramblers | 8 | Radar scramblers | Other entities |
| radengine | 2 | RAD Engine | Software entities |
| radialblur | 10 | Radial blur | Software concepts |
| radialmenu | 102 | Radial menu | Software concepts |
| radiation | 49 | Radiation | Other concepts |
| radiationweapons | 3 | Radiation weapons | Tools themes |
| radioactiveglow | 23 | Radioactive glow | Other themes |
| radiocontroller | 4 | Radio Controller | Hardware themes |
| radiotap | 26 | Radio tap | Other concepts |
| radishes | 2 | Radishes | Other entities |
| radiusengine | 7 | n.a. | |
| radpixomatic | 5 | RAD Pixomatic | Software entities |
| raft | 3 | n.a. | |
| rafting | 2 | n.a. | |
| ragdollphysics | 46 | Ragdoll physics | Software concepts |
| rage | 144 | Rage meter | Other concepts |
| rageengine | 28 | RAGE | Software entities |
| ragers | 50 | Ragers | Creatures themes |
| ragnarok | 1 | n.a. | |
| ragnarok-series | 9 | Ragnarok | Culture series |
| ragtaggang | 91 | Ragtag gang | Video game concepts |
| raiden | 26 | Raiden | Video game series |
| raiders | 34 | Raiders | Creatures themes |
| raiding | 1 | n.a. | |
| raidy-series | 5 | Lightning Warrior Raidy | Video game series |
| railshooter | 137 | Rail shooter | Game genre themes |
| railway | 47 | Railway | Locations themes |
| railworks-series | 2 | RailWorks | Video game series |
| railyard | 17 | Rail yard | Locations themes |
| rain | 85 | Rain | Locations themes |
| rain-acid | 1 | n.a. | |
| rain-harmful | 1 | n.a. | |
| rainbow6 | 36 | Rainbow Six | Video game series |
| rainbowmoon-series | 7 | Rainbow Moon | Video game series |
| raindeer | 1 | n.a. | |
| raisersim | 47 | Raiser sim | Game genre themes |
| raizingpsx-hw | 4 | Raizing PSX arcade hardware | Hardware entities |
| raknet | 14 | RakNet | Software entities |
| rakshasa | 10 | Rakshasa | Creatures themes |
| rally | 182 | Rally | Sport themes |
| rallyxlike | 14 | Rally-X-like | Game genre themes |
| rambo | 25 | Rambo | Culture series |
| ramdisk | 1 | n.a. | |
| rampage | 62 | Rampage | Other themes |
| rampage-series | 32 | Rampage | Video game series |
| rampantcreation | 2 | Rampant creation | Other concepts |
| rampantcrime | 20 | Rampant crime | Other themes |
| ramparts | 64 | Ramparts | Other entities |
| ramupgrade | 1 | RAM Upgrade | Hardware themes |
| rance-series | 25 | Rance | Video game series |
| randomchance | 124 | Random chance | Video game concepts |
| randomdamage | 206 | Random damage | Video game concepts |
| randomentry | 2 | Random level entry | Video game concepts |
| randomevents | 77 | Random events | Video game concepts |
| randomgender | 2 | Random gender | Other concepts |
| randomizedattributes | 26 | Randomized character attributes | Video game concepts |
| randomizedcodes | 1 | n.a. | |
| randomizedcontent | 6 | Randomized content | Video game concepts |
| randomizedeffects | 24 | Randomized effects | Video game concepts |
| randomlocations | 22 | Random locations | Video game concepts |
| randommaps | 7 | Randomly selected maps | Video game concepts |
| randomnpchealth | 1 | Random NPC health | Other concepts |
| randomobjective | 5 | n.a. | |
| randomprotagonist | 7 | Random protagonist | Other concepts |
| randomseed | 18 | Random seed | Software concepts |
| randomstartgear | 6 | Random start gear | Other concepts |
| randomstartingequipment | 9 | Random starting equipment | Other concepts |
| randomstory | 5 | n.a. | |
| randomtaskdetails | 2 | n.a. | |
| rangedweapons | 11 | Ranged weapons | Tools themes |
| rangefinder | 8 | Rangefinder | Tools themes |
| ranma | 17 | Ranma ½ | Cartoon series |
| rape | 41 | Rape | Other themes |
| rapid | 6 | Rapid | Locations themes |
| rapiddevelopment | 12 | Rapid development | Video game concepts |
| rapidfire-hw | 1 | n.a. | |
| rapidmovementplants | 31 | Rapidly Moving Plants | Creatures themes |
| rapidpromotions | 5 | Rapid promotions | Other themes |
| raptorengine | 1 | n.a. | |
| rascallang | 1 | Rascal programming language | Software themes |
| raspberrypi | 1 | n.a. | |
| rastan-series | 15 | Rastan | Video game series |
| ratchetandclank | 14 | Ratchet & Clank | Video game series |
| rating-acb-g | 221 | Rating: ACB G | Culture concepts |
| rating-acb-g8 | 4 | Rating: ACB G8+ | Culture concepts |
| rating-acb-m | 149 | Rating: ACB M | Culture concepts |
| rating-acb-m15 | 3 | Rating: ACB M 15+ | Culture concepts |
| rating-acb-ma15 | 91 | Rating: ACB MA 15+ | Culture concepts |
| rating-acb-pg | 205 | Rating: ACB PG | Culture concepts |
| rating-acb-r18 | 19 | Rating: ACB R18+ | Culture concepts |
| rating-acb-rc | 3 | Rating: ACB RC | Culture concepts |
| rating-adese-13 | 12 | Rating: aDeSe 13+ | Culture concepts |
| rating-adese-16 | 3 | Rating: aDeSe 16+ | Culture concepts |
| rating-adese-18 | 1 | Rating: aDeSe 18+ | Culture concepts |
| rating-adese-tp | 12 | Rating: aDeSe TP | Culture concepts |
| rating-bbfc-12 | 24 | Rating: BBFC 12 | Culture concepts |
| rating-bbfc-15 | 72 | Rating: BBFC 15 | Culture concepts |
| rating-bbfc-18 | 54 | Rating: BBFC 18 | Culture concepts |
| rating-bbfc-pg | 6 | Rating: BBFC PG | Culture concepts |
| rating-bbfc-u | 12 | Rating: BBFC U | Culture concepts |
| rating-cero-a | 389 | Rating: CERO A | Culture concepts |
| rating-cero-b | 286 | Rating: CERO B | Culture concepts |
| rating-cero-c | 277 | Rating: CERO C | Culture concepts |
| rating-cero-d | 132 | Rating: CERO D | Culture concepts |
| rating-cero-z | 64 | Rating: CERO Z | Culture concepts |
| rating-elspa-11 | 188 | Rating: ELSPA 11 | Culture concepts |
| rating-elspa-15 | 105 | Rating: ELSPA 15 | Culture concepts |
| rating-elspa-18 | 10 | Rating: ELSPA 18 | Culture concepts |
| rating-elspa-3 | 467 | Rating: ELSPA 3 | Culture concepts |
| rating-eocs-18 | 2 | Rating: EOCS 18 | Culture concepts |
| rating-esra-15 | 1 | Rating: ESRA 15+ | Culture concepts |
| rating-esrb-ao | 21 | Rating: ESRB AO | Culture concepts |
| rating-esrb-e | 1710 | Rating: ESRB E | Culture concepts |
| rating-esrb-e10 | 490 | Rating: ESRB E 10+ | Culture concepts |
| rating-esrb-ec | 7 | Rating: ESRB Early Childhood | Culture concepts |
| rating-esrb-ka | 296 | Rating: ESRB K-A | Culture concepts |
| rating-esrb-m | 874 | Rating: ESRB M | Culture concepts |
| rating-esrb-t | 1708 | Rating: ESRB T | Culture concepts |
| rating-grb-12 | 39 | Rating: GRB +12 | Culture concepts |
| rating-grb-15 | 38 | Rating: GRB +15 | Culture concepts |
| rating-grb-18 | 40 | Rating: GRB +18 | Culture concepts |
| rating-grb-all | 38 | Rating: GRB ALL | Culture concepts |
| rating-gsrr-12 | 4 | Rating: GSRR Parental Guidance 12 | Culture concepts |
| rating-gsrr-15 | 17 | Rating: GSRR Parental Guidance 15 | Culture concepts |
| rating-gsrr-g | 8 | Rating: GSRR General Public | Culture concepts |
| rating-gsrr-p | 2 | Rating: GSRR Protected | Culture concepts |
| rating-gsrr-r | 12 | Rating: GSRR Restricted | Culture concepts |
| rating-pegi- | 1 | n.a. | |
| rating-pegi-12 | 732 | Rating: PEGI 12 | Culture concepts |
| rating-pegi-16 | 525 | Rating: PEGI 16 | Culture concepts |
| rating-pegi-18 | 324 | Rating: PEGI 18 | Culture concepts |
| rating-pegi-3 | 730 | Rating: PEGI 3 | Culture concepts |
| rating-pegi-7 | 399 | Rating: PEGI 7 | Culture concepts |
| rating-sell-12 | 37 | Rating: SELL 12 | Culture concepts |
| rating-sell-16 | 17 | Rating: SELL 16 | Culture concepts |
| rating-sell-18 | 2 | Rating: SELL 18 | Culture concepts |
| rating-sell-tp | 122 | Rating: SELL Tous Publics | Culture concepts |
| rating-sr-18 | 49 | Rating: Sega Rating 18 | Culture concepts |
| rating-sr-18x | 7 | Rating: Sega Rating 18 X Rated | Culture concepts |
| rating-sr-allages | 388 | Rating: Sega Rating All Ages | Culture concepts |
| rating-sr-violentactions | 4 | Rating: Sega Rating Violent Actions | Culture concepts |
| rating-tigrs-adult | 1 | Rating: TIGRS Adult | Culture concepts |
| rating-tigrs-family | 3 | Rating: TIGRS Family | Culture concepts |
| rating-tigrs-teen | 2 | Rating: TIGRS Teen | Culture concepts |
| rating-usk-0 | 65 | Rating: USK 0 | Culture concepts |
| rating-usk-12 | 111 | Rating: USK 12 | Culture concepts |
| rating-usk-16 | 64 | Rating: USK 16 | Culture concepts |
| rating-usk-18 | 40 | Rating: USK 18 | Culture concepts |
| rating-usk-6 | 77 | Rating: USK 6 | Culture concepts |
| rating-vrc-ga | 222 | Rating: VRC GA | Culture concepts |
| rating-vrc-ma13 | 76 | Rating: VRC MA-13 | Culture concepts |
| rating-vrc-ma17 | 6 | Rating: VRC MA-17 | Culture concepts |
| rats | 170 | Rats | Creatures themes |
| ravenloft | 7 | Ravenloft | Locations concepts |
| ravens | 24 | Ravens | Creatures themes |
| ravensword-series | 5 | Ravensword | Video game series |
| ravingrabbids | 22 | Raving Rabbids | Video game series |
| rawinput | 8 | Raw input | Software concepts |
| raydiumengine | 1 | n.a. | |
| raygungothic | 10 | Raygun Gothic | Fiction genre themes |
| rayguns | 1 | n.a. | |
| rayman | 66 | Rayman | Video game series |
| rayseries | 7 | Ray~ | Video game series |
| raytheon704 | 2 | Raytheon 704 | Hardware entities |
| rcproamengine | 4 | RC Pro-am Engine | Software themes |
| reactionaries | 6 | Reactionaries | Creatures themes |
| reactiontester | 1 | n.a. | |
| reactivenarrator | 5 | Reactive narrator | Other concepts |
| reactos | 20 | ReactOS | Software themes |
| reading | 1 | Reading | Activities themes |
| realantagonist | 8 | Real Antagonist | Creatures themes |
| realbasic | 2 | REALbasic computer programming lanuage and IDE | Software themes |
| realclock | 7 | Real clock | Other concepts |
| realcrisis | 13 | Real crisis | Other themes |
| realestate | 5 | Real Estate | Activities concepts |
| realevents | 2 | Based on real events | Other concepts |
| realism | 9 | Realism | Video game themes |
| realistic | 38 | Realistic | Video game concepts |
| realisticdamage | 51 | Realistic damage | Video game concepts |
| realisticranges | 8 | Realistic ranges | Video game concepts |
| realisticshotguns | 37 | Realistic shotguns | Other themes |
| realitykill | 6 | Actual death | Other concepts |
| realitylab | 2 | Reality Lab | Software entities |
| reallocation | 1 | n.a. | |
| realmonsters | 7 | Real monsters | Creatures themes |
| realprize | 8 | Real Prize | Video game concepts |
| realprotagonist | 94 | Real protagonist | Creatures themes |
| realrealtime | 3 | Real real-time | Video game concepts |
| realrobot | 3 | Real Robot | Activities concepts |
| realrobots | 2 | Real robots | Creatures themes |
| realsound | 11 | RealSound | Software entities |
| realspace-engine | 2 | Realspace game engine | Software entities |
| realtime | 8 | Real-time | Video game concepts |
| realtimecombat | 85 | Real-time combat | Video game concepts |
| realtimelimit | 63 | Real-time limit | Video game concepts |
| realtimestrategy | 176 | Real-Time Strategy | Game genre themes |
| realvirtuality-engine | 15 | Real Virtuality | Software entities |
| realworld | 197 | Real world | Locations themes |
| reanimators | 41 | Re-animators | Creatures entities |
| reapers | 1 | n.a. | |
| rebelgalaxy-series | 6 | Rebel Galaxy series | Video game series |
| rebellion | 181 | Resistance movement | Other themes |
| rebelprotagonist | 59 | Rebel protagonist | Creatures themes |
| rebelstar-series | 6 | Rebelstar | Video game series |
| reboot | 75 | Series reboot | Video game concepts |
| rebornmanga | 14 | Reborn! | Cartoon series |
| rebornprotagonist | 54 | Reborn protagonist | Creatures themes |
| rebuild-series | 4 | Rebuild | Video game series |
| recalled | 7 | Recalled | Other themes |
| recallportal | 96 | Recall portal | Other entities |
| recap | 28 | Recap | Culture concepts |
| recast | 1 | n.a. | |
| recastnavigation | 5 | Recast navigation | Software entities |
| rechargeablebatteries | 1 | Rechargeable batteries | Tools themes |
| recipes | 12 | Recipes, blueprints & schematics | Other entities |
| recipes-mandatory | 8 | Mandatory recipes & blueprints | Other concepts |
| recoil | 59 | Recoil | Other concepts |
| reconstruction-series | 2 | Reconstruction | Video game series |
| recreationalvehicle | 1 | n.a. | |
| recruiting | 132 | Recruiting | Activities themes |
| recruitmenttool | 16 | Recruitment tool | Video game concepts |
| recurrence | 32 | Recurrence | Culture concepts |
| recurrence-character | 64 | Recurrence: Character | Culture concepts |
| recurrence-creature | 3 | Recurrence: Creature | Culture concepts |
| recurrence-location | 22 | Recurrence: Location | Culture concepts |
| recurrence-object | 2 | Recurrence: Object | Culture concepts |
| recurringopponent | 73 | Recurring opponent | Video game concepts |
| recursivereality | 3 | Recursive reality | Video game concepts |
| recursivereference | 21 | Recursive reference | Culture themes |
| recycledlevels | 1 | Recycled levels | Video game concepts |
| recycledtitle | 27 | Recycled title | Other themes |
| recycling | 1 | n.a. | |
| red | 23 | Color scheme: Red | Other themes |
| redalert | 15 | Command & Conquer: Red Alert | Video game series |
| redbaronseries | 1 | n.a. | |
| redbookaudio | 19 | Red Book Audio | Hardware entities |
| redchina | 2 | Red China | Other entities |
| redcode | 4 | REDCODE | Software themes |
| reddead-series | 10 | Red Dead | Video game series |
| reddog | 9 | Red Dog Card Game | Traditional themes |
| redeemingbeatdown | 35 | Redeeming beatdown | Culture themes |
| redefinablekeys | 1 | n.a. | |
| redemption | 17 | Redemption | Culture concepts |
| redengine | 12 | REDengine | Software entities |
| redfaction | 17 | Red Faction | Video game series |
| redhat | 67 | Redhat Linux OS | Software themes |
| redlightdistrict | 15 | Red-light district | Locations themes |
| rednecks | 6 | Rednecks | Creatures themes |
| redorchestra-series | 8 | Red Orchestra | Video game series |
| redpanda | 2 | Red Panda | Creatures themes |
| redscare | 63 | Red Scare | Culture themes |
| redshirts | 1 | n.a. | |
| redsolstice-series | 3 | Red Solstice | Video game series |
| redsteel-series | 2 | Red Steel | Video game series |
| reduced | 3 | Reduced port or conversion | Video game concepts |
| reducedcoloer | 1 | n.a. | |
| refaliceinwonderland | 18 | Refers to Alice in Wonderland | Culture concepts |
| refillableliquidcontainers | 13 | Refillable liquid containers | Other concepts |
| refinery | 6 | Refinery | Locations themes |
| reflecteddeeds | 18 | Reflected deeds | Other concepts |
| refractor2-engine | 9 | Refractor 2 | Software entities |
| refugees | 13 | Refugees | Creatures themes |
| refwhitesnake | 9 | Refers to The White Snake | Culture concepts |
| refwizardofoz | 31 | Refers to the Wizard of Oz | Culture concepts |
| regionlocked | 6 | Region locked | Other concepts |
| rehash | 26 | Rehash | Video game concepts |
| reimagining | 29 | Reimagining | Culture concepts |
| reincarnation | 4 | Reincarnation | Other concepts |
| reinforcements | 1 | n.a. | |
| rejimatsumoto | 10 | Based on Reji Matsumoto's movies or mangas | Cartoon themes |
| rekkanohono | 2 | Rekka no Honō | Cartoon series |
| relativegravity | 3 | n.a. | |
| relay-4x100m | 2 | 4 x 100 meter relay | Sport themes |
| relay-4x400m | 10 | 4 x 400 meter relay | Sport themes |
| relayrace | 10 | Relay Race | Sport themes |
| relentlessguards | 7 | Relentless guards | Video game concepts |
| religion | 53 | Religion | Culture themes |
| religion-buddhism | 1 | n.a. | |
| religion-catholic | 4 | n.a. | |
| religion-christian | 28 | Religion: Christian | Culture concepts |
| religion-fictional | 7 | Religion: Fictional | Culture concepts |
| religion-islam | 2 | n.a. | |
| religion-islamic | 1 | n.a. | |
| religion-judaism | 7 | Religion: Judaism | Culture concepts |
| religion-shinto | 2 | Religion: Shinto | Culture concepts |
| religiousprotagonist | 8 | Religious protagonist | Creatures themes |
| reload | 4 | Reload | Activities themes |
| reload-assisted | 1 | Reload: Assisted | Activities themes |
| reload-auto | 206 | Reload: Automatic | Video game concepts |
| reload-chambering | 13 | Reload: Chambering | Activities themes |
| reload-conditional | 3 | Reload: Conditional | Other concepts |
| reload-detrimental | 2 | Reload: Detrimental | Video game concepts |
| reload-interrupt | 2 | Reload: Interrupt | Activities themes |
| reload-keeppartial | 4 | Ammo reload: Keep partial | Video game concepts |
| reload-lossy | 21 | Ammo reload: Lossy | Video game concepts |
| reload-manual | 405 | Reload: Manual | Activities themes |
| reload-multistage | 4 | Reload: Multistage | Activities themes |
| reload-nointerrupt | 10 | Reload: No interrupt | Video game concepts |
| reload-opportunistic | 9 | Reload: Opportunistic | Video game concepts |
| reload-passive | 4 | Reload: Passive | Other concepts |
| reload-phased | 2 | Reload: Phased | Other concepts |
| reload-real | 19 | Ammo reload: Realistic | Video game concepts |
| reload-refill | 3 | Ammo reload: Refill | Video game concepts |
| reload-slowed | 2 | Reload: Slowed | Video game concepts |
| reluctanthero | 5 | Reluctant hero | Culture themes |
| remake | 2 | n.a. | |
| remaster | 4 | Remaster | Video game concepts |
| remedyconnecteduniverse | 7 | Remedy Connected Universe | Locations concepts |
| remix | 3 | Remix | Music themes |
| remotecamera | 8 | Remote camera | Tools entities |
| remotecontrol | 47 | Remote control | Activities themes |
| remotedetonators | 86 | Remote detonators | Tools concepts |
| ren | 1 | n.a. | |
| renandstimpy | 10 | The Ren & Stimpy Show | Cartoon series |
| rendermanris | 2 | Pixar's RenderMan Interface Specification | Software themes |
| renderwareengine | 68 | RenderWare | Software entities |
| renegade-engine | 5 | Renegade | Software entities |
| renegades | 9 | Renegades | Creatures themes |
| renjs | 1 | n.a. | |
| renju | 11 | Renju | Traditional entities |
| renpu | 1 | n.a. | |
| renpy | 1062 | Ren'Py | Software entities |
| rentalservice | 7 | Rental service | Other concepts |
| renting | 3 | Renting | Activities themes |
| repairing | 120 | Repairing | Activities themes |
| repairlimit | 3 | Repair limit | Other concepts |
| replays | 47 | Replay recording | Video game concepts |
| reptiles | 2 | n.a. | |
| reptilianprotagonist | 16 | Reptilian protagonist | Creatures themes |
| repton-series | 11 | Repton | Video game series |
| repulsion | 58 | Repulsion | Activities concepts |
| reputation | 4 | Reputation | Other concepts |
| req-swapfile | 6 | Requirement: Swap file | Software concepts |
| requiredforethought | 3 | n.a. | |
| rescue | 1293 | Rescue | Activities themes |
| rescuees | 50 | Rescuees | Creatures themes |
| research | 2 | n.a. | |
| researchfacility | 154 | Research facility | Locations themes |
| researching | 57 | Researching | Activities themes |
| residentevil | 92 | Resident Evil | Video game series |
| residentevil-chronicles | 3 | Resident Evil: Chronicles | Video game series |
| residentevil-main | 36 | Resident Evil: Main series | Video game series |
| residentevil-outbreak | 2 | Resident Evil: Outbreak | Video game series |
| residentevil-survivor | 4 | Resident Evil: Survivor | Video game series |
| residualvm | 3 | n.a. | |
| resistance-series | 4 | Resistance | Video game series |
| resort | 12 | Resort | Locations themes |
| resourceallocation | 18 | Internal resource allocation | Activities themes |
| resourcecontrol | 30 | Resource control | Activities concepts |
| resourcecrisis | 22 | Resource crisis | Other themes |
| resourcedenial | 7 | Resource denial | Video game concepts |
| resourcegeneration | 39 | Resource generation | Activities themes |
| resourceharvesting | 472 | Resource harvesting | Activities themes |
| resourceindustry | 34 | Resource industry | Other concepts |
| resourcemanagement | 17 | Resource management | Video game concepts |
| resourceprocessing | 39 | Resource processing | Activities concepts |
| resourceregeneration | 9 | Resource regeneration | Video game concepts |
| resourcerespawning | 2 | Resource respawning | Other concepts |
| resourcetransfer | 16 | Resource transfer | Video game concepts |
| respec | 47 | Respecialization | Video game concepts |
| respublicaromana | 8 | Respublica Romana | Locations themes |
| restaurant | 24 | Restaurant | Locations themes |
| resting | 172 | Resting | Activities themes |
| restingreset | 32 | Resting reset | Other concepts |
| restoration | 6 | Restoration | Activities themes |
| restorativefinishers | 7 | Restorative finishers | Video game concepts |
| restorativegluttony | 43 | Restorative gluttony | Other themes |
| restoredglitch | 2 | Restored glitch | Video game concepts |
| restorepower | 40 | Restore power | Video game concepts |
| resultestimation | 4 | Result estimation | Other concepts |
| resuscitation | 111 | Resuscitation | Activities concepts |
| retailstore | 3 | Retail store | Locations themes |
| retargetablegraphicsapi | 7 | Retargetable Graphics API | Software entities |
| retcon | 18 | Retroactive continuity | Culture themes |
| retelling | 22 | Retelling | Culture themes |
| retreating | 38 | Retreating | Activities themes |
| retro | 492 | Retro | Video game concepts |
| retro-cartoon | 4 | Retro cartoon | Cartoon themes |
| retrofitting | 9 | Retrofitting | Activities themes |
| retrofuture | 76 | Retro-future | Culture themes |
| retromode | 8 | Retro mode | Video game concepts |
| retrypoints | 237 | Retry points | Video game concepts |
| retrypoints-rollback | 25 | Retry points: Rollback | Video game concepts |
| returnofthehylianengine | 7 | Return of the Hylian Engine | Software entities |
| revenge | 106 | Revenge | Culture themes |
| reverseengineering | 1 | Reverse engineering | Activities themes |
| reversi | 309 | Reversi | Traditional entities |
| revisitedlocales | 8 | Revisited locales | Other concepts |
| revolverrifles | 11 | Revolver rifles | Tools themes |
| revolvers | 24 | Revolvers | Tools themes |
| rewardingvandalism | 452 | Rewarding vandalism | Video game concepts |
| rgbout | 1 | RGB Output | Hardware themes |
| rhem-series | 7 | Rhem | Video game series |
| rhib | 1 | RHIB | Vehicles themes |
| rhinoceros | 4 | n.a. | |
| rhinoceroses | 17 | Rhinoceroses | Creatures themes |
| rhodeisland | 5 | Rhode Island, USA | Locations themes |
| rickdangerous | 13 | Rick Dangerous | Video game series |
| ricocheting | 13 | Ricocheting | Activities themes |
| ricochetingattacks | 41 | Ricocheting attacks | Video game concepts |
| riddles | 2 | n.a. | |
| ridgeracer | 17 | Ridge Racer | Video game series |
| riding | 401 | Riding | Activities themes |
| riflegrenades | 12 | Rifle grenades | Tools themes |
| rigel | 1 | Rigel | Locations themes |
| riot-engine | 10 | Riot | Software entities |
| risc | 4 | RISC64 architecture | Hardware themes |
| risc64 | 4 | Risc64 architecture | Hardware themes |
| riscos | 11 | RISC OS operating system | Software themes |
| riscpc-hw | 3 | Risc PC Arcade hardware | Hardware entities |
| risen-series | 8 | Risen | Video game series |
| risetopower | 6 | Rise to power | Other concepts |
| risk | 65 | Risk | Traditional themes |
| risk-like | 1 | n.a. | |
| risklike | 1 | n.a. | |
| riteofpassage | 1 | Rite of passage | Culture concepts |
| rivalry | 2 | Rivalry | Culture concepts |
| rivalschools | 8 | Rival Schools | Video game series |
| river | 188 | River | Locations themes |
| riverking | 7 | River King | Video game series |
| rmsitanic | 14 | RMS Titanic | Culture entities |
| roadbicycleracing | 16 | Road Bicycle Racing | Sport themes |
| roadhogengine | 9 | Road Hog | Software entities |
| roadrash-series | 19 | Road Rash | Video game series |
| roadsigns | 26 | Road signs | Other entities |
| roadtrafficcontrol | 2 | Road traffic control | Activities themes |
| roadwar-series | 14 | Roadwar | Video game series |
| roalddahl | 7 | Roald Dahl | Culture series |
| rob | 2 | R.O.B. | Hardware themes |
| robinengine | 5 | Robin Game Engine | Software entities |
| robinhood | 69 | Robin Hood | Culture series |
| robocod | 1 | n.a. | |
| robocop | 42 | RoboCop | Culture series |
| robotmenace | 90 | Robot menace | Fiction genre themes |
| RobotOdyssey | 10 | Robot Odyssey | Video game series |
| robotos | 1 | n.a. | |
| robotponkotto | 6 | Robot Ponkotto | Video game series |
| robotprotagonist | 465 | Robot protagonist | Creatures themes |
| robotron | 22 | Robotron | Video game series |
| robotronlike | 24 | Robotron Like | Game genre themes |
| robots | 1815 | Robots | Creatures themes |
| rockband | 26 | Rock Band | Video game series |
| rockclimbing | 1 | n.a. | |
| rocketcar | 1 | Rocket Car | Vehicles themes |
| rocketjumping | 53 | Rocket jumping | Video game concepts |
| rocketpower | 8 | Rocket Power | Culture series |
| rockets | 715 | Rockets | Tools themes |
| rocknrollracing | 5 | Rock n Roll Racing | Video game series |
| rockpaperscissors | 25 | Rock–paper–scissors | Traditional entities |
| rockstarsocial | 1 | Rockstar Games Social Club | Software entities |
| rocky | 5 | Rocky | Culture series |
| rockyandbullwinkle | 5 | Rocky and Bullwinkle and Friends | Cartoon series |
| rodentprotagonist | 123 | Rodent protagonist | Creatures themes |
| rodents | 97 | Rodents | Creatures themes |
| rodeo | 13 | Rodeo | Sport themes |
| rodland | 8 | Rodland | Video game series |
| rogue | 1 | n.a. | |
| rogueai | 86 | Rogue A.I. | Creatures themes |
| roguelike | 477 | Roguelike | Game genre themes |
| roguelite | 172 | Rogue-lite | Game genre themes |
| rogueprotagonist | 12 | Rogue protagonist | Creatures themes |
| roguesgallery | 6 | Rogues Gallery | Culture concepts |
| roguetrooper | 9 | Rogue Trooper | Culture series |
| roguevania | 6 | Roguevania | Game genre themes |
| rol | 1 | n.a. | |
| roland | 11 | Roland | Video game series |
| roleplay | 7 | Role-play | Video game concepts |
| roles | 9 | Roles | Video game concepts |
| rollercoasterbattle | 1 | Roller coaster battle | Other concepts |
| rollercoasters | 1 | n.a. | |
| rollerskating | 52 | Rollerskating | Sport themes |
| rolli | 1 | n.a. | |
| rolling | 17 | Rolling | Activities themes |
| rollingthunder | 11 | Rolling Thunder | Video game series |
| romance | 117 | Romance | Activities themes |
| romancia-series | 6 | Romancia | Video game series |
| romania | 17 | Romania | Locations entities |
| rooftops | 82 | Rooftops | Locations themes |
| roogoo-series | 4 | Roogoo | Video game series |
| rookieprotagonist | 65 | Rookie protagonist | Creatures themes |
| roombased | 196 | Room-based | Video game concepts |
| rooting | 30 | Rooting | Activities themes |
| rope | 2 | n.a. | |
| ropes | 1 | n.a. | |
| ropeswinging | 129 | Rope swinging | Activities themes |
| rosebushes | 5 | Rose Bushes | Other entities |
| roses | 131 | Roses | Other entities |
| roses-black | 24 | Black Roses | Other entities |
| roses-blue | 19 | Blue Roses | Other entities |
| roses-crimson | 4 | Crimson Roses | Other entities |
| roses-green | 1 | n.a. | |
| roses-orange | 1 | n.a. | |
| roses-other | 44 | Unique Roses | Other themes |
| roses-pink | 5 | Pink Roses | Other entities |
| roses-purple | 3 | Purple Roses | Other entities |
| roses-red | 49 | Red Roses | Other entities |
| roses-white | 10 | White Roses | Other entities |
| roses-yellow | 8 | Yellow Roses | Other entities |
| rotarycontrol | 6 | A wheel like controller with unlimited spin | Hardware themes |
| rotaryguns | 220 | Rotary guns | Tools entities |
| rotatingplatforms | 17 | Rotating platforms | Other entities |
| rotationpool | 8 | Rotation Pool Game | Traditional themes |
| rotorcraft | 308 | Rotorcraft | Vehicles entities |
| rotoscoping | 52 | Rotoscoping | Other themes |
| rott-series | 8 | Rise of the Triad | Video game series |
| rotting | 53 | Rotting | Other concepts |
| roughterrain | 23 | Rough terrain | Locations themes |
| roulette | 116 | Roulette | Traditional themes |
| routing | 14 | Routing | Activities themes |
| rowing | 14 | Rowing | Sport themes |
| rp-enforced | 2 | n.a. | |
| rp-levelless | 23 | Levelless RPG | Other themes |
| rpg | 33 | Role-playing game | Game genre themes |
| rpg-eastern | 22 | Eastern RPG | Game genre concepts |
| rpg-maker | 1 | n.a. | |
| rpg-western | 3 | Western RPG | Game genre concepts |
| rpgelements | 28 | RPG elements | Video game concepts |
| rpgmaker | 45 | RPG Maker | Software entities |
| rpgmaker-vxace | 3 | RPG Maker VX Ace | Software entities |
| rpgmaker-xp | 4 | RPG Maker XP | Software entities |
| rpm | 120 | Redhat Package Manager | Software themes |
| rps | 1 | n.a. | |
| rpsmechanics | 44 | Rock-Paper-Scissors Mechanics | Other concepts |
| rredline | 2 | RRedline | Software entities |
| rsdos | 1 | n.a. | |
| rsts | 1 | RSTS-11 or RSTS/E operating system | Software themes |
| rsx3daudio | 1 | RSX 3D Audio API | Software entities |
| rtime | 1 | n.a. | |
| rtrt | 1 | Real-time Ray Traced | Software concepts |
| rts | 1 | n.a. | |
| rubberducks | 4 | Rubber ducks | Other entities |
| rubegoldbergmachine | 25 | Rube Goldberg machine | Other entities |
| rubikscube | 38 | Rubik's Cube | Traditional themes |
| rubylanguage | 16 | Ruby language | Software themes |
| rubyonrails | 1 | Ruby on Rails | Software entities |
| rugby | 57 | Rugby football | Sport themes |
| rugbyleague | 9 | Rugby league | Sport themes |
| rugrats | 16 | Rugrats | Cartoon series |
| ruinedworld | 32 | Ruined world | Locations themes |
| ruins | 670 | Ruins | Locations themes |
| rumblepak | 9 | Rumble Pak | Hardware themes |
| rumikotakahashi | 51 | Rumiko Takahashi | Cartoon themes |
| rummy | 29 | Rummy | Traditional themes |
| rumors | 6 | Rumors | Other concepts |
| run-long | 1 | Long distance run | Sport themes |
| run-middle | 13 | Middle distance run | Sport themes |
| run-middle-1500m | 30 | 1500-meter run | Sport themes |
| run-middle-800m | 7 | 800-meter run | Sport themes |
| runandgun | 1177 | Run and Gun | Game genre themes |
| runefactory | 7 | Rune Factory | Video game series |
| runner | 2 | n.a. | |
| running | 4 | n.a. | |
| runningcommentary | 41 | Optional running commentary | Other concepts |
| rural | 148 | Rural setting | Locations themes |
| rushingbeat-series | 3 | Rushing Beat | Video game series |
| russia | 133 | Russia | Locations entities |
| russianroulette | 5 | Russian Roulette | Other concepts |
| rwanda | 1 | Rwanda | Locations entities |
| rygar | 12 | Rygar | Video game series |
| ryoukinoori | 4 | Ryouki no Ori | Video game series |
