| Game Name | System |
|---|
| Rollover Jackpot (PR7002) (Mazooma) (Scorpion 4) (set 2) | MAME |
| Rollover Jackpot (PR7002) (Mazooma) (Scorpion 4) (set 3) | MAME |
| Rollover Jackpot (PR7002) (Mazooma) (Scorpion 4) (set 4) | MAME |
| Rollover Jackpot (PR7032) (Mazooma) (Scorpion 4) (set 1) | MAME |
| Rollover Jackpot (PR7032) (Mazooma) (Scorpion 4) (set 2) | MAME |
| Rollover Jackpot (PR7032) (Mazooma) (Scorpion 4) (set 3) | MAME |
| Roman Legions (Konami Endeavour) | MAME |
| Romar Triv | MAME |
| Rompers (Japan, new version (Rev B)) | MAME |
| Rompers (Japan, old version) | MAME |
| Ron Jan | MAME |
| Ron Jan Super | MAME |
| Ronnie O'Sullivan's Rocket Money (Bellfruit) (Adder 5) (set 1) | MAME |
| Ronnie O'Sullivan's Rocket Money (Bellfruit) (Adder 5) (set 2) | MAME |
| Ronnie O'Sullivan's Rocket Money (Bellfruit) (Adder 5) (set 3) | MAME |
| Ronnie O'Sullivan's Rocket Money (Bellfruit) (Adder 5) (set 4) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 4) (set 1) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 4) (set 2) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 4) (set 3) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 4) (set 4) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 4) (set 5) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 4) (set 6) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 4) (set 7) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 4) (set 8) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 5) (set 1) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 5) (set 2) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 5) (set 3) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 5) (set 4) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 5) (set 5) | MAME |
| Ronnie O'Sullivan's Tournament Snooker (Bellfruit) (Scorpion 5) (set 6) | MAME |
| Roosters Millions (Maygay) (EPOCH) (1.2, set 1) | MAME |
| Roosters Millions (Maygay) (EPOCH) (1.2, set 2) | MAME |
| Rootin' Tootin' (DECO Cassette) (US) | MAME |
| Rootin' Tootin' / La-Pa-Pa (DECO Cassette) (US) | MAME |
| Ropeman (bootleg of Roc'n Rope) | MAME |
| Rose 'n' Crown (Dutch) (Bellfruit) (Scorpion 1) | MAME |
| Rota Note (JPM) (MPS) | MAME |
| Rotary Fighter | MAME |
| Rotation VIII (v. 1.01) | MAME |
| Rotation VIII (v. 1.15) | MAME |
| Rotation VIII (v. 1.17) | MAME |
| Rotex (Union) (MPU4) | MAME |
| Rough Racer (Japan, Floppy Based, FD1094 317-0058-06b) | MAME |
| Rough Ranger (v2.0) | MAME |
| Rough Ranger (v2.0, bootleg) | MAME |
| Rougien | MAME |
| Roulette (Dutch, Game Card 39-360-129?) | MAME |
| Roulette (JPM) (SYSTEM5) | MAME |
| Roulette Club (JPM) (SYSTEM5, set 1) | MAME |
| Roulette Club (JPM) (SYSTEM5, set 2) | MAME |
| Roulette Club (JPM) (SYSTEM5, set 3) | MAME |
| Roulette Club (JPM) (SYSTEM5, set 4) | MAME |
| Roulette Club (JPM) [Mps] (MPS) | MAME |
| Round & Round (Bwb) (MPU5) | MAME |
| Round & Round (Lowen) (MPU5) | MAME |
| Round The Town (Bellfruit) (set 1) (Scorpion 2/3) | MAME |
| Round The Town (Bellfruit) (set 2) (Scorpion 2/3) | MAME |
| Round The Town (Bellfruit) (set 3) (Scorpion 2/3) | MAME |
| Round The Town (Bellfruit) (set 3, Protocol) (Scorpion 2/3) | MAME |
| Round The Town (Bellfruit) (set 4) (Scorpion 2/3) | MAME |
| Round The Town (Bellfruit) (set 4, Protocol) (Scorpion 2/3) | MAME |
| Round The Town (Bellfruit) (set 4, alt) (Scorpion 2/3) | MAME |
| Round The Town (Bellfruit) (set 5) (Scorpion 2/3) | MAME |
| Round The Town (Bellfruit) (set 6) (Scorpion 2/3) | MAME |
| Round The Town (Bellfruit) (set 6, Protocol) (Scorpion 2/3) | MAME |
| Round The Twist (Maygay) (EPOCH) (set 1) | MAME |
| Round The Twist (Maygay) (EPOCH) (set 2) | MAME |
| Round Up 5 - Super Delta Force | MAME |
| Round and Round (Rev 6) (Quick $ilver) | MAME |
| Round-Up | MAME |
| Route 16 (bootleg) | MAME |
| Route 16 (set 1) | MAME |
| Route 16 (set 2) | MAME |
| Route 16 (set 3, bootleg?) | MAME |
| Route 66 (Mazooma) (Scorpion 4) | MAME |
| Route X (bootleg) | MAME |
| Rovers Return (Mazooma) (Scorpion 4) (set 1) | MAME |
| Rovers Return (Mazooma) (Scorpion 4) (set 2) | MAME |
| Rovers Return (Mazooma) (Scorpion 4) (set 3) | MAME |
| Rovers Return (Mazooma) (Scorpion 4) (set 4) | MAME |
| Rovers Return (Mazooma) (Scorpion 4) (set 5) | MAME |
| Rovers Return (Mazooma) (Scorpion 4) (set 6) | MAME |
| Rovers Return (Mazooma) (Scorpion 5) (set 1) | MAME |
| Rovers Return (Mazooma) (Scorpion 5) (set 2) | MAME |
| Rovers Return (Mazooma) (Scorpion 5) (set 3) | MAME |
| Rovers Return (Mazooma) (Scorpion 5) (set 4) | MAME |
| Roy Clark - The Entertainer | MAME |
| Royal (Pool 10 hack) | MAME |
| Royal Ascot (Japan, terminal?) | MAME |
| Royal Ascot II | MAME |
| Royal Card (Austrian, set 1) | MAME |
| Royal Card (Austrian, set 2) | MAME |
| Royal Card (Austrian, set 4) | MAME |
| Royal Card (Austrian, set 5) | MAME |
| Royal Card (Austrian, set 6) | MAME |
| Royal Card (Austrian, set 7, CMC C1030 HW) | MAME |
| Royal Card (Austrian, set 8) | MAME |
| Royal Card (Austrian/Polish, set 3) | MAME |
| Royal Card (French) | MAME |
| Royal Card (Italian, Dino 4 hardware, encrypted) | MAME |
