While Kirby Star Allies received mixed impressions from reviewers, it sold pretty well, and is, as of December 2021, the third best selling game in the series, with almost 4 million copies sold worldwide. The added content mostly came in the form of additional Dream Friends and an Extra Mode that involved them heavily, along with extra bosses and bug fixes. Unlike past mainline games in the series, Kirby Star Allies received a number of free updates over the course of the next several months this was done to keep interest in the game, as well as 'keep long-time fans happy'. It subsequently released on Main nearly all regions, seeing a later release in Hong Kong and South Korea. Kirby Star Allies was initially announced at E3 2017, known then as Kirby for Nintendo Switch. With the aid of these partners, Kirby can then perform combination moves, including some special transformations that can only be done with a full party of four. In place of a special power-up or vehicle specifically for Kirby, Kirby Star Allies features extensive multiplayer co-op, allowing Kirby to recruit allies from various on-stage enemies or summon special partners from the Dream Palaces. Designed as a 'culmination' title of the whole series, the game is largely designed around celebrating it, including several references to past titles in multiple forms, and was released as part of the series' 25th anniversary celebration.

It is a side-scrolling platformer game with three-dimensional visuals that succeeds the Nintendo 3DS titles of Kirby: Triple Deluxe and Kirby: Planet Robobot in general style, though it takes on a set of features and attributes more reminiscent of titles like Kirby Super Star. Kirby Star Allies is a main-series Kirby game for the Nintendo Switch released in 2018, making it the first main-series release on a home console since Kirby's Return to Dream Land in 2011. Other Games section in Super Kirby Clash and Kirby Fighters 2, and Past Adventures section in Kirby and the Forgotten Land, Kirby's Dream Buffet and Kirby's Return to Dream Land Deluxe Turn enemies into allies with Friend Hearts! Combine your pals' powers to invoke mighty Friend Abilities as you fight to save the world! Play with up to four players by sharing Joy-Con.

For information about the titular Star Allies, see Helper.

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