Mario vs. Donkey Kong: Mini-Land Mayhem! is a Nintendo DS video game and the fourth title in the Mario vs. Donkey Kong series. Developed by Nintendo Software Technology and published by Nintendo, Mini-land Mayhem! stars Mario, Donkey Kong and various other characters from the Mario series including Pauline, the woman Mario saved in the original Donkey Kong for arcades. The Mini Marios from the previous games return once again, as does the Mini-land location.
Video game critics described the game as being very similar to Lemmings. In each stage the player must guide miniature toy versions of the game's main characters including Mario, Toad and others. A Super Guide, similar to the one that initially appeared in New Super Mario Bros. Wii and was included in other games such as Super Mario Galaxy 2 and Donkey Kong Country Returns, is present in this title, making it the first non-platformer to use it. There are six worlds in the main story in addition to a seventh "S" (or special) world titled Rainbow Summit.