THE GOOD: If you're a Sonic fan then the multimedia in the 3D bonus world will definetly be of interest to you. The Japanese Sonic adverts are a must see! Especially the one for Sonic 3.
THE BAD: If you've already played and finished the Mega Drive Sonic games you may be a little disappointed as the 3D level will only distract you for so long.
SUMMARY: For anyone new to the Sonic games this was an ideal way to catch up on what you may have missed from the better of the Sonic Mega Drive titles. So you've got Sonic 1, Sonic 2, Sonic 3 and Sonic & Knuckles, plus the ability to connect the first 3 games to the latter as you would if you owned them on the Mega Drive. Sonic Team have also thrown in an extra 3D level for you. Styled much like a Green Hill Zone type setting with some mini missions for you to complete. There's also the Sonic museums for you to look at with things such as artwork, music and even movie clips up for viewing.