Sonic Gems Collection for PlayStation 2 was released on September 30, 2005 in Europe.
The Japanese version features the entire "Bare Knuckle" (known as "Streets of Rage
" in Europe) trilogy for the Mega Drive as a bonus. In this export version, these were removed so that the ESRB rating could be lowered. The Japanese version also included "Bonanza Bros.
" for the Mega Drive, but that was removed from this export version as well.
Tails' Skypatrol for the Game Gear was originally released exclusively in Japan.