Royal Road is the home of the regal Queen Sectonia, Taranza, and many insect variants of previously-seen enemies. Sectonia's castle is both medieval and technologically advanced. Multiple stages are made up of locations and settings from previous levels. Here, Kirby rescues the People of the Sky, rescues King Dedede from Taranza's clutches, and battles Floralia's tyrant head-on.
Each boss is fought again across two separate stages. This time, however, they switch up their tactics, using moves usually only reserved for when they have low life. In essence, their movesets closely resemble those of their DX versions.
The game's last two HAL rooms can be found in Stages 1 and 5. After defeating Gigant Edge in Stage 1, Kirby can fly up into the sky and enter the moon like a door (harkening back to Bubbly Clouds from Kirby's Dream Land). This will lead the hero to the HAL room. In Stage 5, Kirby must wait 86 seconds in the room with the crushing 5x5 blocks. After the time is up, the blocks will retract and push out each time with a letter from the word HAL. A door will then appear on the bottom of the screen, leading to a room with Tilt Gondolas and items.
In Stage 8, Hypernova Kirby is tasked with unfurling a banner at the end of the stage. It features images of Kirby from past games lined up, ending with Hypernova. At the end of the banner is an animated picture of King Dedede and Kirby on in Bubbly Clouds. Dedede pounds the ground with his hammer, and the pair jumps in the air. The goal door and a Sun Stone can be found at the end of the banner, as well as a moon image that acts as a door. Taranza's keychain can be found through the secret door after the player descends in a long fall collecting food.