| Crazy Taxi High Roller | Arcade |
? | 2003-03 | published |
| NHL 2K3 | GameCube |
EU | 2003-03-28 | published |
| NHL 2K3 | Xbox |
EU | 2003-03-28 | published |
| New Roommania - Porori Seishun | PlayStation 2 |
JP | 2003-03 | published, developed |
| Panzer Dragoon Orta | Xbox |
EU | 2003-03-21 | published |
| Panzer Dragoon Orta | Xbox |
EU | 2003-03-21 | published |
| Phantasy Star Online Episode I & II | GameCube |
EU | 2003-03-07 | published |
| Shining Soul | Game Boy Advance |
JP | 2003-03 | published |
| Sonic Advance 2 | Game Boy Advance |
US | 2003-03 | published |
| The House of the Dead III | Xbox |
EU | 2003-03-14 | published |
| The King of Route 66 | PlayStation 2 |
EU | 2003-03 | published |
| The King of Route 66 | PlayStation 2 |
US | 2003-03 | published |
| ToeJam & Earl III - Mission to Earth | Xbox |
EU | 2003-03-07 | published |
| Virtua Fighter 4 - Evolution | PlayStation 2 |
EU | 2003-03 | published |
| Virtua Fighter 4 - Evolution | PlayStation 2 |
JP | 2003-03 | published |
| Virtua Fighter 4 - Evolution | PlayStation 2 |
JP | 2003-03 | published |
| Virtua Fighter 4 - Evolution | PlayStation 2 |
KR | 2003-03 | published |
| Virtua Fighter 4 - Evolution | PlayStation 2 |
US | 2003-03 | published |
| Crazy Taxi - Catch a Ride | Game Boy Advance |
US | 2003-04 | published |
| NBA 2K3 | Xbox |
EU | 2003-04-17 | published |
| NBA 2K3 | Xbox |
EU | 2003-04-17 | published |
| NFL 2K3 | Xbox |
EU | 2003-04-17 | published |
| Phantasy Star Online Episode I & II | Xbox |
US | 2003-04-15 | published |
| Super Monkey Ball Jr | Game Boy Advance |
EU | 2003-04 | published |
| Phantasy Star Online Episode I & II | Xbox |
EU | 2003-05-23 | published |
| SEGA Arcade Gallery | Game Boy Advance |
US | 2003-05 | published |
| Shinobi | PlayStation 2 |
EU | 2003-05 | published |
| Crazy Taxi - Catch a Ride | Game Boy Advance |
EU | 2003-06 | published |
| Crazy Taxi - Catch a Ride | Game Boy Advance |
EU | 2003-06 | published |
| Initial D - Special Stage | PlayStation 2 |
JP | 2003-06 | published |
| Initial D - Special Stage | PlayStation 2 |
AS | 2003-06 | published |
| J.League Pro Soccer Club o Tsukurou! 3 | PlayStation 2 |
JP | 2003-06 | published |
| Jet Grind Radio | Game Boy Advance |
US | 2003-06 | published |
| Sonic Adventure DX - Director's Cut | GameCube |
EU | 2003-06-20 | published |
| Sonic Pinball Party | Game Boy Advance |
US | 2003-06 | published |
| Space Channel 5 - Ulala's Cosmic Attack | Game Boy Advance |
US | 2003-06 | published |
| Virtua Fighter - 10th Anniversary Edition | PlayStation 2 |
EU | 2003-06 | published |
| Crazy Taxi 3 | Xbox |
EU | 2003-07 | published |
| Crazy Taxi 3 | Xbox |
DE | 2003-07 | published |
| Sonic Pinball Party | Game Boy Advance |
EU | 2003-07 | published |
| Sonic Pinball Party | Game Boy Advance |
JP | 2003-07 | published |
| SEGA Arcade Gallery | Game Boy Advance |
EU | 2003-08 | published |
| Sega Ages 2500 Series Vol. 1 - Phantasy Star Generation-1 | PlayStation 2 |
JP | 2003-08 | published, developed |
| Sega Ages 2500 Series Vol. 2 - Monaco GP | PlayStation 2 |
JP | 2003-08 | published, developed |
| Sega Ages 2500 Series Vol. 3 - Fantasy Zone | PlayStation 2 |
JP | 2003-08 | published, developed |
| Sega Ages 2500 Series Vol. 8 - Virtua Racing - FlatOut | PlayStation 2 |
JP | 2003-08 | published, developed |
| ESPN NFL Football | Xbox |
US | 2003-09-02 | published |
| ESPN NHL Hockey | PlayStation 2 |
EU | 2003-09 | published |
| ESPN NHL Hockey | PlayStation 2 |
US | 2003-09 | published |
| ESPN NHL Hockey | Xbox |
US | 2003-09-09 | published |
| Gekitou Pro Yakyuu - Mizushima Shinji All Stars vs. Pro Yakyuu | PlayStation 2 |
JP | 2003-09 | published |
| Gekitou Pro Yakyuu - Mizushima Shinji All Stars vs. Pro Yakyuu | PlayStation 2 |
JP | 2003-09 | published |
| Gekitou Pro Yakyuu Mizushima Shinji All Stars vs. Pro Yakyuu | Arcade |
? | 2003-09 | published |
| Rent a Hero No. 1 | Xbox |
JP | 2003-09-04 | published |
| Sega Ages 2500 Series Vol. 4 - Space Harrier | PlayStation 2 |
JP | 2003-09 | published, developed |
| Sega Ages 2500 Series Vol. 5 - Golden Axe | PlayStation 2 |
JP | 2003-09 | published, developed |
| Shining Soul | Game Boy Advance |
EU | 2003-09 | published |
| Shining Soul | Game Boy Advance |
US | 2003-09 | published |
| Space Channel 5 - Ulala's Cosmic Attack | Game Boy Advance |
EU | 2003-09 | published |
| Worms 3D | PlayStation 2 |
EU | 2003-10 | published |
| Worms 3D | Xbox |
EU | 2003-10-31 | published |
| Daisenryaku 1941 - Gyakuten no Taiheiyou | PlayStation 2 |
JP | 2003-11 | published |
| ESPN College Hoops | PlayStation 2 |
US | 2003-11 | published |
| ESPN College Hoops | Xbox |
US | 2003-11-11 | published |
| ESPN NFL Football | Xbox |
EU | 2003-11-27 | published |
| ESPN NHL Hockey | Xbox |
EU | 2003-11-28 | published |
| Virtua Fighter - 10th Anniversary Fukkoku-ban | PlayStation 2 |
JP | 2003-11 | published |
| Astro Boy - Tetsuwan Atom - Atom Heart no Himitsu | Game Boy Advance |
JP | 2003-12 | developed |
| Kunoichi | PlayStation 2 |
AS | 2003-12 | published |
| Kunoichi | PlayStation 2 |
JP | 2003-12 | published |
| Kunoichi | PlayStation 2 |
JP | 2003-12 | published |
| Kunoichi | PlayStation 2 |
KR | 2003-12 | published |
| OutRun 2 | Arcade |
? | 2003-12 | published |
| Sega Ages 2500 Series Vol. 7 - Columns | PlayStation 2 |
JP | 2003-12 | published, developed |
| Sega GT Online | Xbox |
JP | 2003-12-25 | published |
| Sonic Heroes | PlayStation 2 |
EU | 2003-12 | published |
| Sonic Heroes | PlayStation 2 |
JP | 2003-12 | published |
| Sonic Heroes | PlayStation 2 |
AS | 2003-12 | published |
| Sonic Heroes | PlayStation 2 |
KR | 2003-12 | published |
| Sonic Heroes | Xbox |
JP | 2003-12-04 | published |
| Club Kart Prize Version B | Arcade |
JP | 2004 | published, developed |
| Club Kart Prize Version B | Arcade |
? | 2004 | published, developed |
| Dragon Treasure 2 | Arcade |
? | 2004 | published |
| Ghost Squad | Arcade |
? | 2004 | published, developed |
| Initial D Arcade Stage Ver. 3 Cycraft Edition | Arcade |
? | 2004 | published |
| Jet Set Radio | Game Boy Advance |
EU | 2004 | published |
| Kick '4' Cash | Arcade |
? | 2004 | published, developed |
| Mushiking The King Of Beetle | Arcade |
CN | 2004 | published, developed |
| Mushiking The King Of Beetle | Arcade |
WORLD | 2004 | published, developed |
| Mushiking The King Of Beetle | Arcade |
? | 2004 | published, developed |
| Mushiking The King Of Beetle | Arcade |
KR | 2004 | published, developed |
| OutRun 2 Special Tours | Arcade |
? | 2004 | published |
| OutRun 2 Special Tours | Arcade |
JP | 2004 | published |
| Quest of D | Arcade |
? | 2004 | published |
| Sega Golf Club Network Pro Tour 2005 | Arcade |
? | 2004 | published, developed |
| Shootout Pool Prize / Shootout Pool The Medal Version B | Arcade |
JP | 2004 | published |
| Shootout Pool Prize / Shootout Pool The Medal Version B | Arcade |
JP | 2004 | published |
| The Key Of Avalon 1.2 - Summon The New Monsters | Arcade |
? | 2004 | published |
| The Key Of Avalon 1.3 - Chaotic Sabbat | Arcade |
? | 2004 | published |
| The Key Of Avalon 2.0 - Eutaxy and Commandment | Arcade |
? | 2004 | published |