Sonic World DX - There are animations but there is NO game!

The yearly and anniversary in this year SAGE expo of Sonic fan games have passed.
It have shown us many new and interesting games... and this one.
Yes, Sonic World, this piece of relict, specimen of mammoth vital activity appeared again to scare children at night and I just couldn't pass by!
Yet I didn't want to make a full review.
So here's some kind of walkthrough/let's take a look like good old times, with hellish montage and nightmarish audio (yes, the sound is awful, we screwed up, we apologize)
Enjoy!