Mega Drive Ultimate Collection - Xbox 360

Sonic's Ultimate Genesis Collection (Sega Mega Drive Ultimate Collection in ) is a of video games developed by and published by for and . The compilation features 48 games (49 counting two versions of ) which were previously released for the (including most of the titles released for the system), and the . It is the sequel to the released previously for the and , but contains 16 (in NTSC regions) more games (including unlockable extras).According to Ethan Einhorn, the producer for the collection, the three "lock-on" games (Knuckles in Sonic 2, Sonic 3 & Knuckles, and Blue Sphere) were not included citing "tight development times", and that including them would have meant "dropping several titles from the collection altogether", specifically the aforementioned nine unlockable games since "they all required unique emulation solutions"