The Ultimate Choice

The Ultimate Choice is a sub-game in Kirby Star Allies similar in concept to The Arena sub-games from previous games in the Kirby series. This one is much different to The Arena sub-games, as you can select the difficulty, the last three which needs to be unlocked by completing Guest Star ???? Star Allies Go! to unlock the next 2, then beating one of those difficulties to unlock Soul Melter.

Gameplay
The player can select the abilities for Kirby and the other three friends, which can be played by other players, or can be CPU assistants. Before starting and after every enemy defeat, Kirby and his friends will be taken to the rest area, with six Maxim Tomatoes which would get replaced by regular tomatoes when used. They'll also get a treasure chest containing puzzle pieces if they defeat an enemy.

If they are playing on the last 3 difficulty levels, all Maxim Tomatoes will be replaced by regular tomatoes, which will not respawn next time, and their health is cut to half of their HP. The player can still use amiibo to get puzzle pieces and food items in rest area or during battles (except when they are on Star Allies Sparkler).