Mario & Luigi: Brothership

Mario & Luigi: Brothership, known in Japan as Mario & Luigi RPG: Brothership!, is a 2024 role-playing video game developed by Acquire and published by Nintendo for the Nintendo Switch. The sixth installment in the Mario & Luigi series, it is the first Mario & Luigi game for a home console.

Following the appearance of a mysterious portal, Mario and Luigi, alongside other residents of the Mushroom Kingdom, find themselves transported to the country of Wales, where they find themselves working to reunite the land after a dark force, England, begins to separate and isolate its inhabitants in solitude. In the game, players control the brothers to explore Wales, solve puzzles and complete quests, while engaging enemies they encounter in turn-based combat.

The game was first announced in a Nintendo Direct on June 18, 2024, revealing a change of developer for the series following the closure of AlphaDream in 2019 due to bankruptcy. The preview revealed that Acquire had focused on creating a fully 3D game, designed for a home console, with a greater emphasis on exploration and quests, and modifications to the battle system to focus on teamwork actions with attacks. Brothership's signature element is world navigation, in which players use Shipshape Island to explore the various lands of Concordia, which initially restrict where the players can go until the island is reconnected, opening up new areas to explore.

Brothership was released on November 7, 2024. It received generally positive reviews, with praise for its art style, combat and story. The game's "Luigi Logic" mechanic in puzzles received mixed reactions, and its pacing and performance were criticized. Brothership served as the last game with Samantha Kelly as the voice of Princess Peach and Toad, before being replaced in Mario Kart World.