Players guide Kirby through side-scrolling stages from a world map. He can walk, run, jump, float, inhale enemies, spit them out as stars, and copy selected enemy abilities. Kirby can also swim, slide, climb ladders, and interact with switches and environmental objects.

The main adventure is divided into themed areas containing regular stages, boss encounters, museums, arenas, and optional challenge rooms. Progress comes from clearing stages and recovering the Star Rod pieces, while secret doors and completion records reward exploration. Two-player minigames support alternating play rather than simultaneous co-op.

Choose Copy Abilities according to the stage rather than keeping one power permanently. Projectile abilities are useful against bosses, while Cutter, Sword, and Hammer provide dependable close-range attacks.

Explore every doorway and suspicious wall. Optional rooms often contain extra lives, ability demonstrations, or shortcuts, and learning enemy patterns is safer than rushing through unfamiliar sections. In boss fights, preserve inhaled stars when possible and attack after the boss finishes a movement pattern.