| Phantasy Star II | Mega Drive / Genesis |
EU | 1990 | developed |
| Rambo III | Mega Drive / Genesis |
EU | 1990 | developed |
| Rough Racer | Arcade |
JP | 1990 | published |
| Shadow Dancer | Arcade |
? | 1990 | published |
| Submarine Attack | Master System |
EU | 1990 | published, developed |
| Submarine Attack | Master System |
BR | 1990 | published, developed |
| Submarine Attack | Master System |
TW | 1990 | published, developed |
| Super Arkanoid | Master System |
KR | 1990 | published, developed |
| Super Futebol II | Master System |
BR | 1990 | published |
| Super League | Mega Drive / Genesis |
EU | 1990 | developed |
| Teddy Boy Blues | Mega Drive / Genesis |
JP | 1990 | published, developed |
| Thunder Force AC | Arcade |
? | 1990 | published |
| Thunder Force AC | Arcade |
JP | 1990 | published |
| Thunder Force AC | Arcade |
JP | 1990 | published |
| Ultima IV - Quest of the Avatar | Master System |
EU | 1990 | published |
| Ultima IV - Quest of the Avatar | Master System |
BR | 1990 | published |
| Ultima IV - Quest of the Avatar | Master System |
EU | 1990 | published |
| Ultima IV - Quest of the Avatar | Master System |
BR | 1990 | published |
| Walter Payton Football | Master System |
US | 1990 | developed |
| World Games | Master System |
EU | 1990 | published, developed |
| World Games | Master System |
EU | 1990 | published, developed |
| Assault City | Master System |
EU | 1990-01 | published |
| Assault City | Master System |
BR | 1990-01 | published |
| Dead Angle | Master System |
EU | 1990-01 | published |
| Dead Angle | Master System |
EU | 1990-01 | published |
| Dynamite Dux | Master System |
EU | 1990-01 | published |
| Dynamite Dux | Master System |
EU | 1990-01 | published |
| Phantasy Star II | Mega Drive / Genesis |
US | 1990-03 | developed |
| Phantasy Star II | Mega Drive / Genesis |
US | 1990-03 | developed |
| Super Real Basketball | Mega Drive / Genesis |
JP | 1990-03-02 | developed |
| Super Real Basketball | Mega Drive / Genesis |
KR | 1990-03 | developed |
| Alien Storm | Arcade |
JP | 1990-04 | published |
| Alien Storm | Arcade |
US | 1990-04 | published |
| Alien Storm | Arcade |
WORLD | 1990-04 | published |
| Alien Storm | Arcade |
? | 1990-04 | published |
| Darwin 4081 | Mega Drive / Genesis |
JP | 1990-04-07 | published |
| Darwin 4081 | Mega Drive / Genesis |
KR | 1990-04-07 | published |
| Darwin 4081 | Mega Drive / Genesis |
JP | 1990-04-07 | published |
| Darwin 4081 | Mega Drive / Genesis |
KR | 1990-04-07 | published |
| Phantasy Star III - Generations of Doom | Mega Drive / Genesis |
KR | 1990-04 | developed |
| The Cyber Shinobi | Master System |
BR | 1990-04 | published, developed |
| The Cyber Shinobi | Master System |
BR | 1990-04 | published, developed |
| The Cyber Shinobi | Master System |
TW | 1990-04 | published, developed |
| Toki no Keishousha - Phantasy Star III | Mega Drive / Genesis |
JP | 1990-04 | developed |
| Bonanza Bros | Arcade |
JP | 1990-06 | published, developed |
| Bonanza Bros | Arcade |
US | 1990-06 | published, developed |
| Castle of Illusion Starring Mickey Mouse | Game Gear |
US | 1990-06 | developed |
| Castle of Illusion Starring Mickey Mouse | Game Gear |
EU | 1990-06 | developed |
| Columns | Mega Drive / Genesis |
JP | 1990-06-30 | developed |
| Columns | Mega Drive / Genesis |
EU | 1990-06-30 | developed |
| Columns | Mega Drive / Genesis |
WORLD | 1990-06-30 | developed |
| Twin Hawk | Mega Drive / Genesis |
JP | 1990-06-23 | published |
| Twin Hawk | Mega Drive / Genesis |
EU | 1990-06 | published |
| Twin Hawk | Mega Drive / Genesis |
JP | 1990-06-23 | published |
| Twin Hawk | Mega Drive / Genesis |
EU | 1990-06 | published |
| Columns II: The Voyage Through Time | Arcade |
JP | 1990-07 | published |
| Columns II: The Voyage Through Time | Arcade |
WORLD | 1990-07 | published |
| Cyber Police - ESWAT | Mega Drive / Genesis |
JP | 1990-07 | developed |
| ESWAT - City under Siege | Mega Drive / Genesis |
EU | 1990-07 | developed |
| Michael Jackson's Moonwalker | Arcade |
JP | 1990-07 | developed |
| Michael Jackson's Moonwalker | Arcade |
US | 1990-07 | developed |
| Michael Jackson's Moonwalker | Arcade |
WORLD | 1990-07 | developed |
| Michael Jackson's Moonwalker | Arcade |
? | 1990-07 | developed |
| Pat Riley Basketball | Mega Drive / Genesis |
US | 1990-08 | developed |
| Pat Riley Basketball | Mega Drive / Genesis |
US | 1990-08 | developed |
| Super Monaco GP | Mega Drive / Genesis |
JP | 1990-08-09 | published, developed |
| Super Monaco GP | Mega Drive / Genesis |
WORLD | 1990-08-09 | published, developed |
| Columns | Master System |
US | 1990-09 | published, developed |
| Columns | Master System |
BR | 1990-09 | published, developed |
| Columns | Master System |
US | 1990-09 | published, developed |
| Columns | Master System |
BR | 1990-09 | published, developed |
| Columns | Mega Drive / Genesis |
US | 1990-09 | developed |
| Super Monaco GP | Mega Drive / Genesis |
US | 1990-09 | published, developed |
| Super Monaco GP | Master System |
EU | 1990-09 | published, developed |
| Super Monaco GP | Master System |
BR | 1990-09 | published, developed |
| Super Monaco GP | Master System |
EU | 1990-09 | published, developed |
| Super Monaco GP | Master System |
BR | 1990-09 | published, developed |
| Super Monaco GP | Master System |
US | 1990-09 | published, developed |
| Super Monaco GP | Master System |
US | 1990-09 | published, developed |
| Aurail | Arcade |
JP | 1990-10 | published |
| Aurail | Arcade |
WORLD | 1990-10 | published |
| Aurail | Arcade |
US | 1990-10 | published |
| Columns | Game Gear |
JP | 1990-10-06 | developed |
| Columns | Game Gear |
BR | 1990-10-06 | developed |
| ESWAT - City under Siege | Mega Drive / Genesis |
US | 1990-10 | developed |
| Pengo | Game Gear |
JP | 1990-10-06 | published, developed |
| Super Monaco GP | Game Gear |
JP | 1990-10-06 | published, developed |
| Super Monaco GP | Game Gear |
KR | 1990-10 | published, developed |
| Super Monaco GP | Game Gear |
BR | 1990-10-06 | published, developed |
| The Revenge of Shinobi | Mega Drive / Genesis |
EU | 1990-10 | developed |
| The Revenge of Shinobi | Mega Drive / Genesis |
EU | 1990-10 | developed |
| Columns | Master System |
EU | 1990-11 | published, developed |
| Columns | Master System |
EU | 1990-11 | published, developed |
| I Love Mickey Mouse - Fushigi no Oshiro Daibouken | Mega Drive / Genesis |
JP | 1990-11 | developed |
| Putter Golf | Mega Drive / Genesis |
JP | 1990-11 | published, developed |
| Shi no Meikyuu - Labyrinth of Death | Mega Drive / Genesis |
JP | 1990-11-21 | developed |
| Taisen Mahjong HaoPai | Game Gear |
JP | 1990-11-10 | published |
| Castle of Illusion Starring Mickey Mouse | Mega Drive / Genesis |
US | 1990-12 | developed |
| Dragon Crystal - Tsurani no Meikyuu | Game Gear |
JP | 1990-12 | developed |
| G-LOC - Air Battle | Game Gear |
JP | 1990-12-15 | developed |