"Relive the glory of your SEGA Genesis days with over 40 classic titles from Sonic the Hedgehog to Streets of Rage" - box quote
Sonic's Ultimate Genesis Collection is a series of emulated titles on one disc, and includes the following games:
Alex Kidd in the Enchanted Castle
Alien Storm
Altered Beast
Beyond Oasis
Bonanza Bros.
Columns
Comix Zone
Decap Attack Starring Chuck D Head
Dr. Robotnick's Mean Bean Machine
Dynamite Headdy
Ecco the Dolphin
Ecco: The Tides of Time
E-SWAT
Fatal Labyrinth
Flicky
Golden Axe 1, 2, 3
Kid Chameleon
Phantasy Star 1,2,3,4
Ristar
Shining Force 1,2
Shining In the Darkness
Shinobi III: Return of the Ninja Master
Sonic 3D Blast
Sonic & Knuckles
Sonic Spinball
Sonic The Hedgehog 1,2,3
Streets of Rage 1,2,3
Super Thunder Blade
Vectorman 1,2
Golden Axe Warrior
Alien Syndrome
Altered Beast
Congo Bongo
Fantasy Zone
Shinobi
Space Harrier
Zaxxon
This is a compilation, so each game has its own story.