| | Skill '98 (ver. s98-1.33) | 1998 | Amcoe | skill98 | | 0.00 |
| | Slot Poker Saiyuki (Japan) | 1998 | World Station Co.,LTD | saiyukip | | 0.00 |
| | Snooker 10 (Ver 1.11) | 1998 | Sandii' | snookr10 | | 0.00 |
 | Soul Calibur (Japan, SOC11/VER.A2) (clone of: soulclbr) | 1998 | Namco | soulclbrja | | 0.00 |
| Soul Calibur (Japan, SOC11/VER.B) (clone of: soulclbr) | 1998 | Namco | soulclbrjb | | 0.00 |
| Soul Calibur (Japan, SOC11/VER.C) (clone of: soulclbr) | 1998 | Namco | soulclbrjc | | 0.00 |
| Soul Calibur (US, SOC13/VER.B) (clone of: soulclbr) | 1998 | Namco | soulclbrub | | 0.00 |
| Soul Calibur (US, SOC13/VER.C) (clone of: soulclbr) | 1998 | Namco | soulclbruc | | 0.00 |
| Soul Calibur (World, SOC14/VER.B) (clone of: soulclbr) | 1998 | Namco | soulclbrwb | | 0.00 |
| Soul Calibur (World, SOC14/VER.C) | 1998 | Namco | soulclbr | Fighter / Versus | 9.12 |
| | Space Bomber (clone of: sbomber) | 1998 | Psikyo | sbombera | | 0.00 |
| | Space Bomber (ver. B) | 1998 | Psikyo | sbomber | | 5.50 |
| | Spikeout (Revision C) | 1998 | Sega | spikeout | | 6.40 |
| | Spikeout Final Edition | 1998 | Sega | spikeofe | | 4.82 |
 | Stagger I (Japan) | 1998 | Afega | stagger1 | Shooter / Flying Vertical | 5.50 |
 | Star Gladiator 2: Nightmare of Bilstein (Japan 980316) (clone of: plsmaswd) | 1998 | Capcom | stargld2 | Fighter / Versus | 0.00 |
| | Star Soldier: Vanishing Earth | 1998 | Hudson / Seta | starsldr | | 6.00 |
| | Star Wars Trilogy (clone of: swtrilgy) | 1998 | Sega / LucasArts | swtrilgya | | 0.00 |
| | Star Wars Trilogy (Revision A) | 1998 | Sega / LucasArts | swtrilgy | Unplayable | 5.91 |
 | Steep Slope Sliders (JUET 981110 V1.000) | 1998 | Capcom / Cave / Victor | sss | Sports / Skiing | 7.75 |
