Paper Mario series

Paper Mario
The original Paper Mario, released in Japan as Mario Story and originally known as Super Mario RPG 2, was released for the Nintendo 64 in 2000/2001 to positive media reaction and commercial success. It is set in a paper-based version of the Mushroom Kingdom where as Mario is attending a party at Peach's castle, the palace is suddenly uprooted and lifted into the sky by Bowser's aerial fortress. The Koopa King invades the castle, emerges victorious over Mario, and kidnaps the princess. The story centers on Mario as he tries to reclaim the seven Star Spirits, whom Bowser and his assistant Kammy Koopa had incarcerated in playing cards in an invasion of their residence, Star Haven, during which the tyrant also stole their fabled treasure, the wish-granting Star Rod, which he had used in his defeat of Mario to make himself completely invincible.

Paper Mario: The Thousand-Year Door
Paper Mario: The Thousand-Year Door, originally released in Japan as Paper Mario RPG and tentatively known as Mario Story 2 (Japan) and Paper Mario 2 (North America and Europe), was released in 2004 for the Nintendo GameCube. Like its predecessor, it was well received by critics.

The game is set in a cursed island across an unnamed ocean in a remote area of the Mushroom Kingdom. Peach contacts Mario about a treasure map that she had bought in Rogueport, a town of thieving and notorious characters located on the aforementioned island. Once the princess goes missing, Mario takes it upon himself to search for her. Along the way, he must retrieve the seven legendary Crystal Stars, which together unlock the Thousand-Year Door, a mysterious portal fabled to lead to certain fortune. Little does he know, however, that Peach has actually been kidnapped by the Secret Society of X-Nauts, a group of cybernetic soldiers led by Sir Grodus, who are also searching for the Crystal Stars. Eventually, the X-Nauts give Peach's body to be possessed by a demon called the Shadow Queen in a bid to recover her full power, and Mario and his friends must destroy the princess's possessor in order to free her.

Super Paper Mario
Super Paper Mario was released for the Wii in 2007 and was the only entry to blend side-scrolling platformer gameplay with RPG gameplay. It was originally developed for the GameCube, but silently moved to its successor platform, the Wii.

Luigi, Bowser, and Peach are kidnapped by the villainous Count Bleck, who controls a book of power called the Dark Prognosticus. To fulfill what is foretold in this tome, he arranges a wedding between Peach and Bowser, and thus summons the Chaos Heart to open a black hole known as "The Void", which will eventually grow large enough to destroy the entire universe. Mario is found by the Pixl character Tippi, who transports him to the interdimensional town of Flipside, where he must travel across various dimensions to collect the eight Pure Hearts, which together can be used to banish the Chaos Heart and reverse the destruction. Mario reunites with Peach and Bowser, who agree to help Mario. Count Bleck periodically sends out his minions: the warrior O'Chunks, the immature shapeshifter Mimi, and the mysterious dimension-traveling jester Dimentio. Luigi is brainwashed into the gentleman-thief alter ego "Mr. L", who also antagonizes the heroes; but upon being defeated in battle, regains his memory and joins his brother's cause. It is gradually revealed as the game progresses that "Count Bleck" is the villainous pseudonym of an insane man named Blumiere, and Tippi is a transformed version of a human figure named Lady Timpani, who was banished to wander between dimensions by Blumiere's disdainful father when he learned of her romantic relationship with his son.

Once all eight Pure Hearts have been collected, Mario and company enter Count Bleck's castle, where Bowser, Peach, and Luigi engage in one-on-one battles with Bleck's minions. Mario confronts Bleck but is unable to attack due to the Chaos Heart making him invincible; however, the other three heroes reappear, use the Pure Hearts to halt Bleck's defenses, and help Mario defeat him. Dimentio then becomes the game's true villain; decides to use the Chaos Heart to create a new universe in his own image; and fuses it, Luigi, and himself into a new entity called "Super Dimentio", whom Mario and his friends must use their combined might and the power of the Pure Hearts to defeat in order to restore every world and dimension in the universe.

Paper Mario: Sticker Star
Paper Mario: Sticker Star, known as Paper Mario: Super Seal in Japan, was released for the Nintendo 3DS in 2012 and incorporates the series' papercraft style into its unique gameplay mechanics and is the first handheld game in the series. The Mushroom Kingdom welcomes the arrival of the Sticker Comet, and those who wish on it have a good chance of their wish being granted by the Royal Stickers that reside within. Mario attends the Sticker Fest, a festival held in Decalburg to accommodate the comet's arrival, and as the attendees begin to make their wishes, Bowser crashes the celebration and attempts to make his own wish by touching the comet, causing it to explode, and scattering the six Royal Stickers across the kingdom. One Royal Sticker lands on Bowser, corrupting him with its power, and the Koopa King moves to kidnap Peach and knock Mario out. After regaining consciousness, Mario encounters Kersti the sticker fairy, caretaker of the Royal Stickers, who demands that Mario help her recover them. So, they embark on their journey toward Bowser's sky castle and attempt to match his sticker power, defeat him, and get the princess back.