Before Nintendo released Kirby Star Allies for Switch in 2018, they were working on a very similar game for their GameCube: Kirby Adventure, a cancelled project which was never released.
“Kirby’s first full-scale action game for Nintendo GameCube arrives with a variety of modes, including a wild multiplayer adventure. The story begins when Kirby sets out to get the stolen Warpstar back from King Dedede. It’s tough going for Kirby when he’s on his own…so it’s a good thing he can catch a ride on the backs of his helpers. Utilizing a new attack system, Kirby can gain power by riding on up to three helpers. The more helpers, the more powerful the attack. It’s up to Kirby to save the beautiful world of Dream Land.”
“Nintendo announced a new Kirby GameCube title seemingly out of nowhere this past week, without actually revealing details on how the game will end up playing. Today, we’ve got just one revealing bit of news: the game will offer play for up to four players.”