Switch Nsp [update] - Kirby Star Allies

: A new "difficult" mode that becomes available after clearing Story Mode, featuring harder versions of bosses.

If you are updating from an older version, these are the significant content additions included in the base 4.0.0 content: Kirby Star Allies SWITCH NSP [Update]

The latest official update for on the Nintendo Switch is Version 4.0.0a , released on June 4, 2025. This update was primarily designed to optimize the game for play on the Nintendo Switch 2 , implementing several adjustments to improve the gameplay experience on the new system. : A new "difficult" mode that becomes available

While the version number on the software's title screen may still show as , the Options menu on the Home Menu will reflect 4.0.0a once the update is applied. Key Features from Major Updates released on June 4