http://www.mission-in-snowdriftland.com/
Mission in Snowdriftland is an absolutely gorgeously detailed 2D
side-scrolling platform Flash game with production values that
rival Nintendo's own efforts in the category. In fact, this one
appears to have been commissioned by Nintendo as an advergame as it
contains all sorts of delightful unlockable goodies—from
screenshots and wallpapers to videos and ringtones—from several of
Nintendo's latest DS handheld and Wii console offerings.