 | Skull & Crossbones (rev 3) (clone of: skullxbo) | 1989 | Atari Games | skullxbo3 | | 0.00 |
| Skull & Crossbones (rev 4) (clone of: skullxbo) | 1989 | Atari Games | skullxbo4 | | 0.00 |
| Skull & Crossbones (rev 5) | 1989 | Atari Games | skullxbo | Fighter / 2.5D | 3.24 |
 | Sky Adventure (Japan) (clone of: skyadvnt) | 1989 | Alpha Denshi Co. | skyadvntj | | 0.00 |
| Sky Adventure (US) (clone of: skyadvnt) | 1989 | Alpha Denshi Co. (SNK of America license) | skyadvntu | | 0.00 |
| Sky Adventure (World) | 1989 | Alpha Denshi Co. | skyadvnt | Shooter / Flying Vertical | 7.09 |
| | Sky Robo | 1989 | Nichibutsu | skyrobo | | 7.50 |
 | Sly Spy (US revision 2) (clone of: slyspy) | 1989 | Data East USA | slyspy2 | Platform / Shooter Scrolling | 0.00 |
| Sly Spy (US revision 3) | 1989 | Data East USA | slyspy | Platform / Shooter Scrolling | 6.05 |
 | Spark Man (v2.0, set 1) | 1989 | SunA | sparkman | Platform / Shooter Scrolling | 7.00 |
| Spark Man (v2.0, set 2) (clone of: sparkman) | 1989 | SunA | sparkmana | | 0.00 |
 | Special Criminal Investigation (Japan) (clone of: sci) | 1989 | Taito Corporation | scij | | 0.00 |
| Special Criminal Investigation (US) (clone of: sci) | 1989 | Taito America Corporation | sciu | Shooter / Driving (chase view) | 0.00 |
| Special Criminal Investigation (World set 1) | 1989 | Taito Corporation Japan | sci | Shooter / Driving (chase view) | 7.55 |
| Special Criminal Investigation (World set 2) (clone of: sci) | 1989 | Taito Corporation Japan | scia | Shooter / Driving (chase view) | 0.00 |
 | Sports Match (clone of: drgpunch) | 1989 | Dynax (Fabtek license) | sprtmtch | Puzzle / Match | 0.00 |
 | Street Smart (Japan version 1) (clone of: streetsm) | 1989 | SNK | streetsmj | | 0.00 |
| Street Smart (US version 1) (clone of: streetsm) | 1989 | SNK | streetsm1 | | 0.00 |
| Street Smart (US version 2) | 1989 | SNK | streetsm | Fighter / Versus Co-op | 4.67 |
| Street Smart (World version 1) (clone of: streetsm) | 1989 | SNK | streetsmw | | 0.00 |
