CGRtrailers, from Classic Game Room®, presents the extended version of the Nintendo 3DS launch trailer for MARIO & SONIC AT THE LONDON 2012 OLYMPIC GAMES™ from SEGA®.

Check out more video game previews and trailers from Classic Game Room’s CGRtrailers at http://www.dailymotion.com/CGRtrailers

Get more Classic Game Room on Facebook at http://www.facebook.com/ClassicGameRoom