Sonic's Ultimate Genesis Collection is a compilation of:
Sudden Fall unlocked all of the achievements for Sonic's Ultimate Genesis Collection.
Sudden Fall unlocked 8 achievements for 310 in Sonic's Ultimate Genesis Collection.
Sudden Fall unlocked 18 achievements for 455 in Sonic's Ultimate Genesis Collection.
Sudden Fall added a new game to their profile.
Sudden Fall unlocked 8 achievements for 235 in Sonic's Ultimate Genesis Collection.
Ed3r Liv3 unlocked an achievement in Sonic's Ultimate Genesis Collection.
Jblacq unlocked an achievement in Sonic's Ultimate Genesis Collection.
Eduplds added a new game to their profile.
Eduplds unlocked 10 achievements for 230 in Sonic's Ultimate Genesis Collection.
retrochief1969 unlocked 2 achievements for 40 in Sonic's Ultimate Genesis Collection.
retrochief1969 unlocked an achievement in Sonic's Ultimate Genesis Collection.
retrochief1969 unlocked 23 achievements for 695 in Sonic's Ultimate Genesis Collection.
MadVirus unlocked all of the achievements for Sonic's Ultimate Genesis Collection.
MadVirus unlocked 13 achievements for 470 in Sonic's Ultimate Genesis Collection.
MadVirus unlocked 11 achievements for 285 in Sonic's Ultimate Genesis Collection.