Sonic Mega Collection/Hidden content
From Sonic Retro
Removed Content
When hacking into Sonic Mega Collection, one can find the entire European Sonic CD manual. Not only that, but a preview version has Sonic CD on the list of games to pick. On the same preview version, in the movies section, you can find "Sonic the Hedgehog Movie Part 1" and "Sonic the Hedgehog Movie Part 2", referring that the Sonic OVA was once in Mega Collection.