| | Reelin-n-Rockin (0100779V, Local) | 1998 | Aristocrat | reelrock | | 0.00 |
| | Safe Cracker (1.8 alternate sound) (clone of: sc_18) | 1998 | Bally | sc_18s2 | | 0.00 |
| | Safe Cracker (1.8) | 1998 | Bally | sc_18 | | 0.00 |
| | Safe Cracker (1.8N) (clone of: sc_18) | 1998 | Bally | sc_18n | | 0.00 |
| | Samurai Shodown 64 / Samurai Spirits 64 | 1998 | SNK | sams64 | | 0.00 |
 | Samurai Shodown: Warrior's Rage / Samurai Spirits 2: Asura Zanmaden | 1998 | SNK | sams64_2 | Unplayable | 2.53 |
| | San Francisco Rush 2049 | 1998 | Atari Games | sf2049 | | 8.00 |
| | San Francisco Rush 2049: Special Edition (clone of: sf2049) | 1998 | Atari Games | sf2049se | | 0.00 |
| | San Francisco Rush 2049: Tournament Edition (clone of: sf2049) | 1998 | Atari Games | sf2049te | | 0.00 |
| | Sega Rally 2 | 1998 | Sega | srally2 | Unplayable | 8.25 |
| | Sega Rally 2 DX | 1998 | Sega | srally2x | | 0.00 |
 | Sen Jin - Guardian Storm (Korea) (clone of: grdnstrm) | 1998 | Afega | grdnstrmk | | 0.00 |
 | Shanghai Matekibuyuu | 1998 | Sunsoft / Activision | shngmtkb | Puzzle / Match | 5.00 |
 | Sharpshooter (Rev 1.1) (clone of: sshooter) | 1998 | P&P; Marketing | sshooter11 | | 0.00 |
| Sharpshooter (Rev 1.2) (clone of: sshooter) | 1998 | P&P; Marketing | sshooter12 | | 0.00 |
| Sharpshooter (Rev 1.7) (clone of: sshooter) | 1998 | P&P; Marketing | sshooter17 | | 0.00 |
| Sharpshooter (Rev 1.9) | 1998 | P&P; Marketing | sshooter | Shooter / Gun | 7.50 |
 | Shock Troopers - 2nd Squad | 1998 | Saurus | shocktr2 | Shooter / Walking | 9.16 |
| | Sigma Poker 2000 | 1998 | Sigma Inc. | sigma2k | | 0.00 |
| | Ski Champ | 1998 | Sega | skichamp | | 5.00 |
