| Slot Machine |  Ring of Fire | 2002 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Ring of Fire | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Ring Quest | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Ringside Champ | 2000 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Rising Fortunes G+ | 2008 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Risk & Reward | 2004 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | River Belle 21 | 1999 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | RiverBelle | ???? | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Riverboat Gambler | 1997 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Road to Riches | 1997 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Road to Riches | 2004 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Robin Hood and the Golden Arrow G+ Deluxe | 2010 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Robin Hood's Sherwood Treasure mechanical | 2002 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Rock & Roll Bowl | 1997 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Rocket Riches | 2004 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Rocket to Riches | 1997 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Rockstar Sevens | 200? | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Roll a Fortune | 1998 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Roll and Win | 1998 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Roll Credits | 2002 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Roll for Cash | 1999 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Roll for Dough | 1999 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Roll in the Dough | 1998 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Roll of Fortune | 1999 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Rolling in Cash | 1999 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Roman Dynasty | 2007 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Rome & Egypt G+ 5x4 | 2008 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Rope 'Em In | 2006 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Rose of Cairo G+ Mechanical | 2008 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Royal Family | 2004 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Royal Treasures | 2005 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Royal Unicorn Max Win | 2009 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Ruby Ring | 2008 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Ruby Star 5x4 Bonus Jackpots | 2011 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Running Wild Wrap Around Pays | 2007 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Sabertooth G+ 5x4 | 2008 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | SafeCracker | 1997 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Samurai Master G+ | 2007 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Samurai Master Super Multi-Pay | 2009 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Say Cheese | 2005 | WMS Gaming, Inc. Chicago, IL, USA |
