 | Skull & Crossbones (rev 1) (clone of: skullxbo) | 1989 | Atari Games | skullxbo1 | | 0.00 |
| Skull & Crossbones (rev 2) (clone of: skullxbo) | 1989 | Atari Games | skullxbo2 | | 0.00 |
| 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 |
 | Skull Fang (Japan) (clone of: skullfng) | 1996 | Data East Corporation | skullfngj | | 0.00 |
| Skull Fang (World) | 1996 | Data East Corporation | skullfng | Unplayable | 8.83 |
| | Skullduggery Club (Empire) (MPU5) (set 1) | 1969 | Empire | m5skulcl | | 0.00 |
| | Skullduggery Club (Empire) (MPU5) (set 2) (clone of: m5skulcl) | 1969 | Empire | m5skulcl20 | | 0.00 |
| | Skullduggery Club (Empire) (MPU5) (set 3) (clone of: m5skulcl) | 1969 | Empire | m5skulcl23 | | 0.00 |
 | 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 Alert | 1992 | Metro | skyalert | Shooter / Flying Vertical | 7.00 |
 | Sky Army | 1982 | Shoei | skyarmy | Shooter / Flying Horizontal | 4.50 |
 | Sky Base | 1982 | Omori Electric Co., Ltd. | skybase | Shooter / Gallery | 6.00 |
 | Sky Bumper | 1982 | Venture Line | skybump | Shooter / Flying | 4.33 |
 | Sky Chuter (sample of: ipminvad) | 1980 | Irem | skychut | Shooter / Gallery | 2.50 |
| | Sky Destroyer (Japan) | 1985 | Taito Corporation | skydest | | 7.50 |
 | Sky Diver | 1978 | Atari | skydiver | Sports / SkyDiving | 5.00 |
