The Arena is a Sub-Game debuting in Kirby Super Star, where the requirement is to the defeat the Main Game bosses and mid-bosses encountered in the title it appears in, with a single life, with limited health benefits. It is similar to Boss Endurance modes, but is generally given more importance, and is always required for 100% completion of the game.
Milky Way Wishes is the sixth main game in Kirby Super Star and its remake, and the final one in the former. This game is unlocked by completing The Great Cave Offensive and Revenge of Meta Knight (which requires clearing Dyna Blade) in Kirby Super Star.
Revenge of Meta Knight is the fifth main game in Kirby Super Star and its remake. This game takes a much more serious tone than the other games in the collection, and tasks Kirby with stopping Meta Knight and the Meta-Knights from taking over Dream Land using their giant ominous flying warship, the Halberd.
Dyna Blade is the second main game featured in Kirby Super Star and its remake, Kirby Super Star Ultra. In this game, Dyna Blade, a large bird with metal wings, has stolen crops from local farmers. Kirby must go through four levels and two hidden areas, before finally fighting Dyna Blade herself.
Spring Breeze is the first main game in Kirby Super Star and Kirby Super Star Ultra. It is essentially a simplified remake of Kirby's Dream Land, with some differences to compensate for this. It is the first main game to be playable, and is designed to introduce new players to the game.
A Super Mario Bros. X Thing: Prelude to the Stupid was the first major game developed by the Talkhaus through the Super Mario Bros. X engine, and is the second game in the A Super Mario Thing series. It follows Demo and Iris collecting leeks through "The Castle of No Significance". In addition to Demo and Iris, three other characters are playable; Kood (from Drama Mistery), Raocow, and Sheath (from ATXS).
Sir Fred is a platform game where the protagonist must infiltrate the great castle of Beni-Gómez to rescue his beloved princess. The player guides Sir Fred through different rooms of the castle to complete his mission. The protagonist must avoid the numerous dangers and use different objects that will help him reach his destination.