| R.A.S. | 2000 | — | France |
| R.O.B.O:T | 2006 | — | Canada |
| Ragnarok | 1992 | Ludotecnia | Spain |
| Rapture: The Second Coming | 1995 | Holistic Design | United States |
| Rats in the Walls | 2006 | — | — |
| Raôul | 1994 | Les Rêveurs de Runes | France |
| Recon | 1982 | Palladium Books | United States |
| Red Dragon (role-playing fiction) | 2015 | — | Japan |
| Redbox Hack | 2007 | self-published work | — |
| Regnum Ex Nihilo | 5 May 2021 | — | Spain |
| Reich Star | 1991 | — | — |
| Reign | 2007 | Atomic Overmind Press | United States |
| Retrofuture | 2002 | Multisim | France |
| Rifts | 1990 | Palladium Books | United States |
| Ringworld | 1984 | Chaosium | United States |
| Risus | 1993 | Cumberland Games & Diversions | United States |
| Rivers of London: The Roleplaying Game | 2022 | Chaosium | — |
| Roanoke | 2006 | — | — |
| Robert E. Howard's Conan: Adventures in an Age Undreamed Of | 2017 | Target Games | Sweden |
| Robot Warriors | 1986 | Hero Games | United States |
| Robotech | 1986 | Palladium Books | United States |
| Robotech: The Shadow Chronicles Role-Playing Game | 2008 | Palladium Books | United States |
| Rocket Age | 2013 | Cubicle 7 | United Kingdom |
| Rogue Trader | 2009 | — | United States |
| ROLE | 1985 | Casus Belli | France |
| Rolemaster | 1980 | Iron Crown Enterprises | United States |
| Rolemaster (1st edition) | 1980 | Iron Crown Enterprises | — |
| Rolemaster (2nd edition) | 1984 | Iron Crown Enterprises | — |
| Rolemaster (4th edition) | 1999 | Iron Crown Enterprises | — |
| Rolemaster Classic | 2007 | Iron Crown Enterprises | — |
| Rolemaster Express | 2007 | Iron Crown Enterprises | — |
| Rolemaster Standard System | 1994 | Iron Crown Enterprises | — |
| Rolemaster Unified | 2022 | — | — |
| Roleplayer | 1983 | — | — |
| Romance érotique | 2012 | Black Book Éditions | France |
| RPGQuest | 2005 | — | — |
| Ruf des Warlock | 1990 | Games-In Verlag | Germany |
| Rune | 2001 | Atlas Games | United States |
| RuneQuest | 1978 | Chaosium | United States |
| RuneSlayers | 1998 | — | — |
| Russia without Putin? | 2018 | — | Russia |
| Ryuutama, Natural Fantasy Roleplaying Game | 2007 | Jive | Japan |
| Rêve: the Dream Ouroboros | 1985 | Scriptarium, Multisim, Nouvelles Éditions Fantastiques | France |
| Rêves | 1997 | Fédération française de jeux de rôle | France |