Sonic's Ultimate Genesis Collection

Sonic's Ultimate Genesis Collection, (known in Europe or Brazil/Australia as Sega Mega Drive Ultimate Collection), is a 2009 video game compilation developed by Backbone Entertainment and published by Sega for the PlayStation 3 and Xbox 360. The compilation features 48 Sega games (49 counting two versions of Altered Beast) which were previously released for the Sega Genesis (including most of the Sonic the Hedgehog titles released for the system), arcades and the Master System. It is the sequel to the Sega Genesis Collection released previously for the PlayStation 2 and PlayStation Portable, but contains 16 more games (in NTSC regions, including unlockable extras).