Well, starting a Luigi's Mansion fanfiction can be quite exciting. You should start with a concept that grabs the reader's attention. For instance, you could start with a prologue that shows something mysterious happening in the mansion long before Luigi arrives. Then, when you introduce Luigi, describe his feelings as he approaches the mansion. Is he nervous? Excited? Also, consider the tone of your story. Are you going for a spooky, humorous, or more serious tone? Once you've decided on these aspects, you can start building the plot. You can introduce secondary characters, like the ghosts Luigi will encounter, and start developing their personalities and motives.
First, think about the main character, which is usually Luigi. Decide what his goal or motivation will be in the story. For example, it could be to rescue Mario who has been captured by a powerful ghost. Then, come up with a setting within the mansion. Is it a particular floor or room that's important? After that, start writing a simple introduction that sets the mood, like 'Luigi stepped into the dark and eerie Luigi's Mansion, his heart pounding with fear but his determination strong.'
To start a Luigi's Mansion fanfiction, begin by brainstorming ideas. You can draw inspiration from the actual game mechanics, like the different types of ghosts and how Luigi deals with them. Maybe you want to start with a scene where Luigi is on his way to the mansion, thinking about what he might encounter. You could describe his journey, the spooky forest or path leading to the mansion. Once you have a clear idea of the starting point, introduce the conflict. It could be as simple as Luigi losing his map of the mansion and having to navigate blindly at first.
Begin by brainstorming the characters and settings you want to combine with Luigi. Let's say it's a crossover with the Final Fantasy series. Think about how Luigi would adapt to a world full of magic and complex characters. You could start with Luigi being magically transported to a Final Fantasy realm. Describe his initial confusion and then start introducing the main conflict. Maybe a powerful sorcerer in the Final Fantasy world is trying to take over the Mushroom Kingdom too, and Luigi has to find allies in this new world to stop him. Develop your characters' personalities and relationships as you write, and don't be afraid to let the story take unexpected turns.
To start writing your 'dark Luigi' fanfiction, consider his relationships. How would his new, dark self interact with Mario? Would he try to manipulate Princess Peach? You also need to establish a clear plot. It could start with a small event that sets Luigi on his dark path, such as finding a cursed object. As you write, don't be afraid to give Luigi new powers or abilities that match his darker nature.
First, think about their backstory. For example, if your OC grew up near a haunted place, that could explain their interest in or knowledge of the supernatural. Second, give them unique abilities or flaws. Maybe they're really good at finding hidden treasures but are terrified of the dark. Third, consider their appearance. In the Luigi's Mansion world, characters often have a spooky or whimsical look, so your OC could have a unique hat or a special type of flashlight that reflects their personality.
For a Luigi's Mansion and Super Smash Bros. crossover fanfiction, Luigi could be in the middle of a Smash Bros. battle when a portal to his mansion opens up. Characters from the Smash Bros. roster get accidentally sucked in. Luigi has to lead them through his mansion, fighting off the more dangerous ghosts. Some characters like Kirby might try to eat the ghosts, while others like Link would use their weapons. Along the journey, they discover secrets about Luigi's Mansion that Luigi himself didn't know, all while trying to find a way back to the Smash Bros. arena.
One idea could be exploring Luigi's character growth. Maybe he discovers a new power within the mansion that helps him face his fears more bravely. Another idea is to create a backstory for the ghosts in the mansion, like how they came to be there and what their lives were like before. A third idea could be a crossover where characters from another game enter Luigi's Mansion, creating new and exciting adventures.
One of the top stories could be the encounter with the various bosses on different floors. Each boss has its unique design and backstory, like the sea - themed boss on one of the lower floors. Another top story might be Luigi's exploration of the different themed floors, such as the spooky circus floor.
In a Luigi's Mansion and Pokémon crossover, a plot point could be that a rare and powerful Pokémon has been trapped in the mansion by an evil ghost trainer. Ash and his Pikachu arrive to help Luigi. Pikachu uses its electric attacks to stun the ghosts while Luigi captures them. They explore the mansion, looking for the Pokémon. Along the way, they encounter different types of Pokémon that have also been affected by the mansion's spooky aura. Some have become ghost - like themselves and Ash has to figure out how to help them while also finding the trapped Pokémon.
A plot could revolve around Luigi having to rescue all the Toads that have been scattered throughout the mansion in different forms - some are invisible, some are trapped in paintings. As he searches for them, he uncovers secrets about the mansion's original owner and their dark past.
Maybe the mansion is a place where time and space are distorted. Luigi and Tails get separated at first. Luigi has to find Tails while dealing with the strange things in the mansion like rooms that change shape. Tails, on the other hand, is trying to find a way to stabilize the time - space distortion. Eventually, they find each other and combine their efforts to fix the situation.
Luigi's Mansion 3 story doesn't offer online coop. It's designed for local cooperative play, which means you need to have another person physically with you to play together.