Mario vs. Donkey Kong: Mini-Land Mayhem! is a puzzle-platform game for the Nintendo DS, released in 2010. Players control Mario as he pursues Donkey Kong, who has kidnapped Mini Pauline during the opening of Mario's theme park. The game features level creation tools, allowing players to design and share custom stages, enhancing the gameplay experience with new challenges and creative opportunities.
At the grand opening of Mario's third theme park, the first 100 guests receive a new Mini Pauline toy. Donkey Kong arrives as the 101st guest and finds himself out of luck. He grabs Pauline and heads into the park with Mario and his Mini Marios in hot pursuit. The fourth game in the series adds new challenges and new opportunities for users to share what they have created.