There's no evidence to suggest that 'Dark Star Mario Inside Story' is an official Mario game. Nintendo has a set of established Mario titles, and this doesn't seem to be among them. It could be a creative idea by fans or an indie project, but not an official product from Nintendo.
Fanfiction often varies greatly in popularity and it's hard to define specific 'popular' adult ones as they may also violate certain ethical or community guidelines. However, non - adult fanfiction might include stories where Mario goes on new adventures in different kingdoms, meets new characters, and overcomes unique challenges. For example, a story could be about Mario exploring a hidden kingdom that wasn't in the original game.
First, decide on the setting in real life. It could be a big city or a small island. Then, think about how Mario's abilities would work in that environment. For example, his long jumps might be affected by real - world physics. Next, create a plot. Maybe Bowser has a plan to take over a famous real - world landmark, and Mario has to stop him. Also, don't forget to add some humor and the unique charm of Mario's world.
A theme of discovery is also quite prevalent. They might discover new power - ups, hidden areas, or secrets about each other. For example, Pauline could discover a hidden ability within herself while Mario might find a new way to defeat enemies. The fanfics also often have a theme of overcoming challenges, whether it's big bosses or difficult terrains.
The two main characters in 'Mario and Luigi: The Inside Story' are Mario and Luigi. Mario is the more well - known and heroic of the two, often taking the lead in their adventures. Luigi, his brother, is also very important. He has his own unique abilities that complement Mario's, and together they form a great team to face the challenges in the game.