| G-LOC - Air Battle | Game Gear |
BR | 1990-12-15 | developed |
| Magical Hat no Buttobi Turbo! Daibouken | Mega Drive / Genesis |
JP | 1990-12 | published |
| Wonder Boy III - Monster Lair | Mega Drive / Genesis |
JP | 1990-12-22 | published |
| World Cup Italia '90 | Master System |
EU | 1990-12 | published |
| World Cup Italia '90 | Master System |
BR | 1990-12 | published |
| World Cup Italia '90 | Mega Drive / Genesis |
EU | 1990-12 | developed |
| 16t | Mega Drive / Genesis |
JP | 1991 | published |
| Ace of Aces | Master System |
EU | 1991 | published |
| Ace of Aces | Master System |
BR | 1991 | published |
| Arabian Fight | Arcade |
JP | 1991 | published |
| Arabian Fight | Arcade |
US | 1991 | published |
| Arabian Fight | Arcade |
WORLD | 1991 | published |
| Asterix | Master System |
BR | 1991 | published, developed |
| Aworg - Hero in the Sky | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Bonanza Bros | Arcade |
? | 1991 | published, developed |
| California Games | Arcade |
? | 1991 | published |
| Clutch Hitter | Arcade |
JP | 1991 | published, developed |
| Clutch Hitter | Arcade |
US | 1991 | published, developed |
| Dragon Crystal | Game Gear |
US | 1991 | developed |
| Dragon Crystal | Game Gear |
EU | 1991 | developed |
| Dynamic Country Club | Arcade |
JP | 1991 | published |
| Dynamic Country Club | Arcade |
US | 1991 | published |
| Dynamic Country Club | Arcade |
WORLD | 1991 | published |
| F1 Exhaust Note | Arcade |
JP | 1991 | published |
| F1 Exhaust Note | Arcade |
US | 1991 | published |
| F1 Exhaust Note | Arcade |
WORLD | 1991 | published |
| Fatal Labyrinth | Mega Drive / Genesis |
US | 1991 | developed |
| Fatal Labyrinth | Mega Drive / Genesis |
EU | 1991 | developed |
| G-LOC - Air Battle | Master System |
BR | 1991 | published |
| Lemmings | Master System |
BR | 1991 | published |
| Lemmings | Master System |
BR | 1991 | published |
| Medal City | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Phantasy Star II - Amia's Adventure | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Phantasy Star II - Anne's Adventure | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Phantasy Star II - Huey's Adventure | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Phantasy Star II - Kinds's Adventure | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Phantasy Star II - Shilka's Adventure | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Phantasy Star II - Yushis's Adventure | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Phantasy Star III - Generations of Doom | Mega Drive / Genesis |
BR | 1991 | developed |
| Pyramid Magic | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Pyramid Magic II | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Pyramid Magic III | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Pyramid Magic Special | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Ribbit! | Arcade |
? | 1991 | published, developed |
| Ribbit! | Arcade |
JP | 1991 | published, developed |
| Robot Battler | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Shadow Dancer - The Secret of Shinobi | Master System |
BR | 1991 | published |
| Sonic Eraser | Mega Drive / Genesis |
JP | 1991 | published, developed |
| Streets of Rage | Arcade |
? | 1991 | published, developed |
| Summer Games | Master System |
EU | 1991 | published |
| Summer Games | Master System |
BR | 1991 | published |
| Summer Games | Master System |
EU | 1991 | published |
| Summer Games | Master System |
BR | 1991 | published |
| Super Monaco GP | Game Gear |
US | 1991 | published, developed |
| Super Monaco GP | Game Gear |
EU | 1991 | published, developed |
| Twin Squash | Arcade |
? | 1991 | published, developed |
| Waku Waku Sonic Patrol Car | Arcade |
? | 1991 | published, developed |
| Wrestle War | Arcade |
? | 1991 | published, developed |
| Arnold Palmer Tournament Golf | Mega Drive / Genesis |
EU | 1991-01 | developed |
| Arnold Palmer Tournament Golf | Mega Drive / Genesis |
EU | 1991-01 | developed |
| Danan - The Jungle Fighter | Master System |
EU | 1991-01 | published, developed |
| Flicky | Mega Drive / Genesis |
US | 1991-01 | developed |
| Flicky | Mega Drive / Genesis |
EU | 1991-01 | developed |
| Gain Ground | Master System |
EU | 1991-01 | published, developed |
| Gain Ground | Master System |
EU | 1991-01 | published, developed |
| Ghouls'n Ghosts | Master System |
US | 1991-01 | developed |
| The Pro Yakyuu '91 | Game Gear |
JP | 1991-01-26 | published, developed |
| Battle Golfer Yui | Mega Drive / Genesis |
JP | 1991-02-15 | published |
| Castle of Illusion Starring Mickey Mouse | Master System |
US | 1991-02 | developed |
| Castle of Illusion Starring Mickey Mouse | Master System |
EU | 1991-02 | developed |
| Castle of Illusion Starring Mickey Mouse | Master System |
BR | 1991-02 | developed |
| Michael Jackson's Moonwalker | Master System |
EU | 1991-02 | published |
| Michael Jackson's Moonwalker | Master System |
EU | 1991-02 | published |
| Paddle Fighter | Mega Drive / Genesis |
JP | 1991-02 | published, developed |
| Bahamut Senki | Mega Drive / Genesis |
JP | 1991-03-08 | published, developed |
| Castle of Illusion Starring Mickey Mouse | Mega Drive / Genesis |
EU | 1991-03 | developed |
| Castle of Illusion Starring Mickey Mouse | Game Gear |
BR | 1991-03 | developed |
| Hyper Marbles | Mega Drive / Genesis |
JP | 1991-03 | published, developed |
| Kinetic Connection | Game Gear |
JP | 1991-03-29 | published |
| Mickey Mouse no Castle Illusion | Game Gear |
JP | 1991-03 | developed |
| Super Real Basketball | Mega Drive / Genesis |
EU | 1991-03 | developed |
| Tarot no Yakata | Game Gear |
JP | 1991-03 | published |
| Woody Pop | Game Gear |
JP | 1991-03-01 | developed |
| Woody Pop | Game Gear |
US | 1991-03 | developed |
| Woody Pop | Game Gear |
BR | 1991-03 | developed |
| Columns | Game Gear |
US | 1991-04-26 | developed |
| Cotton | Arcade |
JP | 1991-04 | published |
| Cotton | Arcade |
US | 1991-04 | published |
| Cotton | Arcade |
WORLD | 1991-04 | published |
| Dynamite Duke | Master System |
EU | 1991-04 | published |
| Dynamite Duke | Master System |
BR | 1991-04 | published |
| G-LOC - Air Battle | Game Gear |
US | 1991-04 | developed |
| Ghouls'n Ghosts | Master System |
EU | 1991-04 | developed |
| Golden Axe Warrior | Master System |
US | 1991-04 | developed |
| Golden Axe Warrior | Master System |
BR | 1991-04 | developed |
| MegaMind | Mega Drive / Genesis |
JP | 1991-04 | published, developed |
| Nikkan Sports Pro Yakyuu VAN | Mega Drive / Genesis |
JP | 1991-04 | published, developed |
| Sangokushi Retsuden - Ransei no Eiyuutachi | Mega Drive / Genesis |
JP | 1991-04 | published |
| Shinobi | Game Gear |
WORLD | 1991-04 | developed |
| Skweek | Game Gear |
JP | 1991-04 | published |