| Alex Kidd - Cheongong Maseong | KR | 1990 |
Sega of America | Commercial |
| Battle Squadron | US | 1990 |
Electronic Arts | Commercial |
| Battle Squadron | US | 1990 |
Electronic Arts | Prototype |
| Bimini Run | US | 1990 |
Nuvision Entertainment | Commercial |
| Chaoji Poker | TW | 1990 |
| Unlicensed |
| Curse | US | 1990 |
Micronet | Prototype |
| Generals of the Yang Family - Clan of Heroes | US | 1990 |
Piko Interactive | Unlicensed |
| Herzog Zwei | EU | 1990 |
Sega | Commercial |
| Ishido - The Way of Stones | US | 1990 |
Accolade | Unlicensed |
| Jerry Glanville's Pigskin Footbrawl | US | 1990 |
Midway | Commercial |
| Last Battle | EU | 1990 |
Sega of America | Commercial |
| Midnight Resistance | US | 1990 |
Data East | Commercial |
| Mystic Defender | EU | 1990 |
Sega of America | Commercial |
| Mystic Defender | EU | 1990 |
Sega of America | Prototype |
| Phantasy Star II | EU | 1990 |
Sega of America | Commercial |
| Phantasy Star II | EU | 1990 |
Sega of America | Prototype |
| Rambo III | EU | 1990 |
Sega of America | Commercial |
| Stormlord | US | 1990 |
Hewson Consultants | Commercial |
| Super League | EU | 1990 |
Sega of America | Commercial |
| Sword of Sodan | EU | 1990 |
Electronic Arts | Commercial |
| Sword of Sodan | US | 1990 |
Electronic Arts | Commercial |
| Sword of Sodan | WORLD | 1990 |
Electronic Arts | Commercial |
| Sword of Vermilion | EU | 1990 |
Sega of America | Commercial |
| Technocop | US | 1990 |
RazorSoft | Commercial |
| Technocop | US | 1990 |
RazorSoft | Prototype |
| Teddy Boy Blues | JP | 1990 |
Sega Enterprises | Commercial |
| Trampoline Terror! | US | 1990 |
DreamWorks | Commercial |
| Yimen Yinglie - Yangjia Jiang | TW | 1990 |
Piko Interactive | Unlicensed |
| Zoom! | WORLD | 1990-01-13 |
Sega of America | Commercial |
| Sorcerian | JP | 1990-02-24 |
Nihon Falcom | Commercial |
| After Burner II | EU | 1990-03 |
Sega of America | Commercial |
| Herzog Zwei | US | 1990-03 |
Sega | Commercial |
| James 'Buster' Douglas Knockout Boxing | EU | 1990-03 |
Sega | Commercial |
| James 'Buster' Douglas Knockout Boxing | US | 1990-03 |
Sega | Commercial |
| Juusou Kihei Leynos | JP | 1990-03 |
DreamWorks | Commercial |
| Phantasy Star II | US | 1990-03 |
Sega of America | Commercial |
| Phantasy Star II | US | 1990-03 |
Sega of America | Prototype |
| Super Hydlide | US | 1990-03 |
Asmik | Commercial |
| Super Hydlide | US | 1990-03 |
Asmik | Prototype |
| Super Real Basketball | KR | 1990-03 |
Sega of America | Commercial |
| Target Earth | EU | 1990-03 |
DreamWorks | Commercial |
| Target Earth | US | 1990-03 |
DreamWorks | Commercial |
| Target Earth | US | 1990-03 |
DreamWorks | Prototype |
| Super Real Basketball | JP | 1990-03-02 |
Sega of America | Commercial |
| The NewZealand Story | JP | 1990-03-03 |
Taito | Commercial |
| Air Diver | JP | 1990-03-09 |
Seismic | Commercial |
| After Burner II | JP | 1990-03-23 |
Sega of America | Commercial |
| Final Blow | JP | 1990-03-23 |
Sega | Commercial |
| Final Blow | JP | 1990-03-23 |
Sega | Prototype |
| Air Diver | US | 1990-04 |
Seismic | Commercial |
| Phantasy Star III - Generations of Doom | KR | 1990-04 |
Sega of America | Commercial |
| Shove It! ...The Warehouse Game | US | 1990-04 |
DreamWorks | Commercial |
| Toki no Keishousha - Phantasy Star III | JP | 1990-04 |
Sega of America | Commercial |
| Darwin 4081 | JP | 1990-04-07 |
Sega Enterprises | Commercial |
| Darwin 4081 | JP | 1990-04-07 |
Sega Enterprises | Prototype |
| Darwin 4081 | KR | 1990-04-07 |
Sega Enterprises | Commercial |
| Darwin 4081 | KR | 1990-04-07 |
Sega Enterprises | Prototype |
| Psy-O-Blade | JP | 1990-04-27 |
Sigma Enterprises | Commercial |
| DJ Boy | US | 1990-05 |
Sega | Commercial |
| Whip Rush - Wakusei Voltegas no Nazo | JP | 1990-05 |
Tokai Engineering | Commercial |
| DJ Boy | JP | 1990-05-19 |
Sega | Commercial |
| Twin Hawk | EU | 1990-06 |
Sega Enterprises | Commercial |
| Twin Hawk | EU | 1990-06 |
Sega Enterprises | Prototype |
| Tel-Tel Mahjong | JP | 1990-06-08 |
Sunsoft | Commercial |
| Thunder Force III | JP | 1990-06-08 |
Sega | Commercial |
| Thunder Force III | JP | 1990-06-08 |
Sega | Prototype |
| Twin Hawk | JP | 1990-06-23 |
Sega Enterprises | Commercial |
| Twin Hawk | JP | 1990-06-23 |
Sega Enterprises | Prototype |
| Columns | EU | 1990-06-30 |
Sega of America | Commercial |
| Columns | JP | 1990-06-30 |
Sega of America | Commercial |
| Columns | WORLD | 1990-06-30 |
Sega of America | Commercial |
| Ghostbusters | JP | 1990-06-30 |
Sega of America | Commercial |
| After Burner II | US | 1990-07 |
Sega of America | Commercial |
| Budokan - The Martial Spirit | US | 1990-07 |
Electronic Arts | Prototype |
| Budokan - The Martial Spirit | US | 1990-07 |
Electronic Arts | Unlicensed |
| Cyber Police - ESWAT | JP | 1990-07 |
Sega of America | Commercial |
| Cyberball | WORLD | 1990-07 |
Sega of America | Commercial |
| ESWAT - City under Siege | EU | 1990-07 |
Sega of America | Commercial |
| Phelios | JP | 1990-07-20 |
Namco | Commercial |
| Phelios | WORLD | 1990-07-20 |
Namco | Commercial |
| Batman | JP | 1990-07-27 |
Sunsoft | Commercial |
| Ghostbusters | US | 1990-08 |
Sega of America | Commercial |
| Ghostbusters | US | 1990-08 |
Sega of America | Prototype |
| Pat Riley Basketball | US | 1990-08 |
Sega of America | Commercial |
| Pat Riley Basketball | US | 1990-08 |
Sega of America | Prototype |
| Shadow Blasters | US | 1990-08 |
Sage's Creation | Commercial |
| Shiten Myouou | JP | 1990-08 |
Sage's Creation | Commercial |
| Super Monaco GP | JP | 1990-08-09 |
Sega Enterprises | Commercial |
| Super Monaco GP | WORLD | 1990-08-09 |
Sega Enterprises | Commercial |
| Michael Jackson's Moonwalker | JP | 1990-08-25 |
Sega of America | Commercial |
| Michael Jackson's Moonwalker | JP | 1990-08-25 |
Sega of America | Prototype |
| Michael Jackson's Moonwalker | WORLD | 1990-08-25 |
Sega of America | Commercial |
| XDR - X-Dazedly-Ray | JP | 1990-08-26 |
UNIPACC | Commercial |
| Alex Kidd in the Enchanted Castle | EU | 1990-09 |
Sega of America | Commercial |
| Altered Beast | EU | 1990-09 |
Sega of America | Commercial |
| Columns | US | 1990-09 |
Sega of America | Commercial |
| Insector X | KR | 1990-09 |
Taito | Commercial |
| Klax | EU | 1990-09 |
Tengen | Commercial |
| Klax | EU | 1990-09 |
Tengen | Prototype |
| Klax | US | 1990-09 |
Tengen | Commercial |