Atlus

Sega (Others) | Sega Games | Sonic Team | Sega Toys
Defunct
Sega Sports | SegaSoft | Deep Water | Sega Technical Institute

Hardware
Arcade systems
Mega-Tech | Sega System 32 | Mega-Play | Sega ST-V | NAOMI (Hikaru | NAOMI 2) | Triforce | RingEdge (RingWide | RingEdge 2) | Nu
Consoles
SG-1000 | Master System | Mega Drive (Mega CD | 32X) | Saturn | Dreamcast
Handhelds
Game Gear | Nomad (Mega Jet) | VMU
Educational consoles
Pico | Advanced Pico Beena
Other
Vision | Sega Genesis Mini

Franchises
7th Dragon | After Burner | Alex Kidd | Bonanza Bros. | Border Break | Columns Company of Heroes | Crazy Taxi | Daytona USA | Derby Owners Club | Dinosaur King | Doki Doki Penguin Land | Dragon Force | Ecco the Dolphin | Endless Space | Eastside Hockey Manager | Fantasy Zone | Fighting Vipers | Football Manager | Golden Axe | Guardian Heroes | Gunstar Heroes | Hang-On | Hatsune Miku: Project DIVA | Head On | Hero Bank | Herzog | Illusion | Jet Set Radio | Love and Berry | Monaco GP | Mushiking: The King of Beetles | Nights | Out Run | Panzer Dragoon | Pengo | Phantasy Star | Puyo Puyo | Rolan's Curse | Sakura Wars | Sangokushi Taisen | Sega All-Stars | Sega Bass Fishing | Sega GT | Sega Rally | Shenmue | Shining | Shinobi | Sonic The Hedgehog | Space Channel 5 | Space Harrier | Starhorse | Streets of Rage | Super Monkey Ball | The House of the Dead | Thunder Blade | Thunder Force | Total War | Valkyria Chronicles | Vectorman | Virtua Cop | Virtua Fighter | Virtua Striker | Virtua Tennis | Virtual On | Warhammer 40,000: Dawn of War | World Club Champion Football | Yakuza | Zaxxon