Mario & Luigi: Partners in Time is a turn-based action RPG video game for the Nintendo DS, developed by AlphaDream and published by Nintendo, and it is the second title in the Mario & Luigi series. It was released in North America and Japan in 2005, in Europe and Australia in 2006, and in South Korea in 2010. The story of the game involves Mario and Luigi time-traveling between their present and past times and teaming up with their infant selves, Baby Mario and Baby Luigi, to stop the invasion in the past by the enemy alien species called the Shroobs.
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