A list of the short trailers, in no special order: Silent Forest, Windy Hill, Frozen Factory, Desert Ruins, Tropical Coast, Sky Road, Lava Mountain. -- SONIC NEWS NOW TWITTER: http://twitter.com/sonicnewsnow -- WEBSITE: http://sonicforcer.blogspot.ca -- Subscribe to SonicForcer for latest news updates and trailers on Sonic the Hedgehog! -- (c) 2013 SonicSound/SonicForcer LLC.
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The video is kinda self explanatory. From what I saw there was some more trailers for the 3DS...