| Nintendo Game Boy Cart. |  Sea Battle Model DMG-AB8P-EUR | 1998 | Infogrames Europe 546430 |
| Pachislot | Sea Roar | 1998 | Pioneer Co., Ltd. Japan |
| Sega Saturn CD | SeaBass Fishing 2 Satakore | 1998 | Victor Interactive Soft., Inc. |
| PC/MS-Windows CD | Seasons of the Sakura | 1998 | Jast USA |
| Redemption game (mechanical) | Seesaw Rally | 1998 | Yuvo |
| Sega Saturn CD | Sega Ages: Fushigi no Oshiro Daibouken + Guruzia Ou no Hihou Model GS-9179 P | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Sega Rally 2 - Sega Rally Championship | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Sega Rally Championship Netlink Edition Model 81215 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Sega Saturn de Hekken! Tamagocchi Park | 1998 | Bandai Co., Ltd. Japan |
| PC/MS-Windows CD | Sega Touring Car Championship | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Sega Worldwide Soccer '98 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Sega Worldwide Soccer '98 Club Edition | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Sega Worldwide Soccer '98 Model 81123 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| PC MS-Windows/Macintosh CD | Segata Sanshirou - Choujin Densetsu Model HCJ-0346 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Segata Sanshirou - Shinken Yuugi Model GS-9204 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sony PlayStation CD |  Seiji o Asobou! Potestas Model SLPS-01748 | 1998 | Nexus Interact Japan |
| Sony PlayStation CD |  Seirei Shoukan - Princess of Darkness - Taikenban Special Disc Model SLPM-80271 | 1998 | Shoeisha Co., Ltd. Japan |
| Sony PlayStation CD | Seiri Shoukan - Princess of Darkness Model SLPS-01271 | 1998 | Shoeisha Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Selection I & II Model DMG-ASLJ-JPN | 1998 | Kemco, Ltd. |
| Sega Saturn CD | Senkutsu Katsuryu Taisen - Chaos Seed Model T-30902G | 1998 | ESP Ent. Soft. Publishing |
| Sega Saturn CD | Sentimental Graffiti | 1998 | Nec InterChannel, Ltd. Japan |
| PC/MS-Windows CD | Sentimental Graffiti | 1998 | Nec InterChannel, Ltd. Japan |
| Sony PlayStation CD | Sentimental Journey Model SLPS-01473 | 1998 | Banpresto Japan |
| PC/MS-Windows CD | Sentinel Returns | 1998 | Psygnosis, Ltd. |
| Sony PlayStation CD | Sentinel Returns Model SLES-01051 | 1998 | Psygnosis, Ltd. |
| Sony PlayStation CD |  Sentinel Returns Model SLUS-00604 | 1998 | Psygnosis, Ltd. |
| Sony PlayStation CD | Serial Experiments Lain Model SLPS-01603~4 | 1998 | Pioneer LDC, Inc. Japan |
| Sony PlayStation CD | Service Price Edition: Love Game's - Wai Wai Tennis Model SLPS-01647 | 1998 | Tears Japan |
| Sony PlayStation CD | Sesame Street - Elmo's Letter Adventure Model SLUS-00621 | 1998 | NewKidCo International, Inc. |
| Sony PlayStation CD | Sesame Street - Elmo's Number Journey Model SLUS-00622 | 1998 | NewKidCo International, Inc. |
| PC/MS-Windows CD | Seven Kingdoms - Ancient Adversaries | 1998 | Interactive Magic |
| PC/MS-Windows CD | Seven Years War | 1998 | CDV Soft. GmbH Germany |
| Sega Dreamcast GD | Seventh Cross Model T-38802M | 1998 | NEC Home Electronics, Ltd. |
| PC/MS-Windows CD | Sexy Lion | 1998 | Samsung Korea |
| Pachinko | Sexy Shot | 1998 | Maruhon Japan |
| Sony PlayStation CD | Shadow Gunner - The Robot Wars Model SLES-01359 | 1998 | UBI Soft Creteil, France 307211 |
| PC/MS-Windows CD | Shadow Master | 1998 | Psygnosis, Ltd. |
| Sony PlayStation CD | Shadow Master Model SLES-00888 | 1998 | Psygnosis, Ltd. |
| Sony PlayStation CD | Shadow Master Model SLUS-00545 | 1998 | Psygnosis, Ltd. |
| Sony PlayStation CD | Shadow Tower Model SLPS-01420 | 1998 | From Soft. |
