Mario & Luigi RPG - Siganui Partner

In Mario & Luigi RPG - Siganui Partner, players control Mario and Luigi as they journey through Toad Town, solving puzzles to advance while battling Shroob aliens that invade the kingdom after Princess Peach is kidnapped. The story follows the brothers teaming with their baby selves, Baby Mario and Baby Luigi, to restore peace and defeat the invaders who have devastated half of the realm. Key characters include Mario, Luigi, Baby Mario, Baby Luigi, Princess Peach, and Professor E. Gadd who helps with time travel elements. What makes it stand out is its innovative use of the Nintendo DS screen for battles, where timing is crucial, plus cooperative mechanics involving baby versions of the protagonists. It features turn-based combat with special moves using items like hammers and Bro Flowers, exploration of overland areas, and multiple game modes including puzzle-solving and boss fights.