| | Road Hog (Barcrest) (MPU4) (RR6 1.2D) (clone of: m4rhog) | 1991 | Barcrest | m4rhogr6d | | 0.00 |
| | Road Hog (Barcrest) (MPU4) (RR6 1.2K) (clone of: m4rhog) | 1991 | Barcrest | m4rhogr6k | | 0.00 |
| | Road Hog (Barcrest) (MPU4) (RR6 1.2Y) (clone of: m4rhog) | 1991 | Barcrest | m4rhogr6y | | 0.00 |
| | Road Hog (Barcrest) (MPU4) (RR6 1.2YD) (clone of: m4rhog) | 1991 | Barcrest | m4rhogr6yd | | 0.00 |
 | Road Riot 4WD (set 1, 13 Nov 1991) | 1991 | Atari Games | roadriot | Driving / Race (chase view) | 8.57 |
| Road Riot 4WD (set 2, 04 Jun 1991) (clone of: roadriot) | 1991 | Atari Games | roadrioto | | 0.00 |
 | Robo Army | 1991 | SNK | roboarmy | Fighter / 2.5D | 8.82 |
 | Robocop 2 (Euro/Asia v0.10) | 1991 | Data East Corporation | robocop2 | Fighter / 2.5D | 6.60 |
| Robocop 2 (Japan v0.11) (clone of: robocop2) | 1991 | Data East Corporation | robocop2j | | 0.00 |
| Robocop 2 (US v0.05) (clone of: robocop2) | 1991 | Data East Corporation | robocop2u | | 0.00 |
 | Rockin' Kats (PlayChoice-10) | 1991 | Atlus (Nintendo of America license) | pc_rkats | Platform / Fighter Scrolling | 0.00 |
 | Rohga Armor Force (Asia/Europe v3.0 set 1) (clone of: rohga) | 1991 | Data East Corporation | rohga1 | | 0.00 |
| Rohga Armor Force (Asia/Europe v3.0 set 2) (clone of: rohga) | 1991 | Data East Corporation | rohga2 | | 0.00 |
| Rohga Armor Force (Asia/Europe v5.0) | 1991 | Data East Corporation | rohga | Platform / Shooter Scrolling | 8.67 |
| Rohga Armor Force (Hong Kong v3.0) (clone of: rohga) | 1991 | Data East Corporation | rohgah | Platform / Shooter Scrolling | 0.00 |
| Rohga Armor Force (US v1.0) (clone of: rohga) | 1991 | Data East Corporation | rohgau | Platform / Shooter Scrolling | 0.00 |
| | Rollergames (EXPERIMENTAL) (clone of: rollr_l2) | 1991 | Williams | rollr_ex | | 0.00 |
 | Rollergames (Japan) (clone of: rollerg) | 1991 | Konami | rollergj | Sports | 0.00 |
| | Rollergames (PA-2 / PA-1 Sound) (clone of: rollr_l2) | 1991 | Williams | rollr_p2 | | 0.00 |
| | Rollergames (PU-1) (clone of: rollr_l2) | 1991 | Williams | rollr_e1 | | 0.00 |
