Joystiq:"In the newest Mario vs. Donkey Kong, Mario has once again subcontracted his search-and-rescue duties to miniaturized, wind-up versions of himself. Once the Mini Marios get going, they won't stop until they exit the level – or, you know, die. Mario's task, and yours, is to guide the Minis safely through each map by manipulating their environment.
Each of the game's eight worlds introduces a new mechanic. You start by moving around girders – which can serve as bridges, ramps, and walls – that will shape the path of your Minis. Later, you graduate to more advanced conveyor belts, springs, and Donkey Kong Country-style cannons."