Last November SEGA released a couple of TV commercials for the release of the Wii version of Mario & Sonic at the London 2012 Olympic Games. Now that the 3DS version has been released as well another pair of advertisements come with it, again with each having their own gameplay clips and ending.
http://www.youtube.com/watch?v=hvQndquqxrY
In this commercial Mario and Sonic get a tour around a royal palace while they try not to act like their usual selves. Above is Sonic’s version, after the jump you can view the version with Mario’s ending and the launch trailer for the 3DS edition.