The game released worldwide in September 2020, but was accidentally leaked prior on the Play Nintendo website.

Kirby Fighters 2 is a platform fighting game for up to four players on either the same console or online/local play.

[2] The game's story mode, titled The Destined Rivals, is divided into five chapters where the player must fight a series of consecutive CPU-controlled enemy Kirby with randomized copy abilities alongside another player or a computer-controlled ally.

The game mode features roguelike elements, with the player given a choice between upgrades after each battle.

The game released worldwide on September 23, 2020, on the Nintendo eShop, six years after the previous title, Kirby Fighters Deluxe.