You can start by looking on fan - fiction websites like FanFiction.net or Archive of Our Own. Just search for 'Metroid' and then sort through the results. You can also ask in Metroid - related forums. There are often threads where fans recommend their favorite fan fictions.
There's also 'Samus Aran: Origins'. This fan fiction focuses on how Samus became the badass bounty hunter we know. It has detailed descriptions of her training and the events that shaped her. It's really interesting as it fills in the gaps in the official story.
The story of 'Metroid Fusion' is quite good too. The idea of Samus being infected by the X - Parasite and having to fight against it while also dealing with the computer, Adam, that controls her actions. It's a story full of tension, with Samus having to constantly battle not only external enemies but also her own internal struggles as she tries to figure out what's really going on with her body and the station she's on.
In Metroid fanfic, a common and great storyline is Samus getting stranded on an unknown planet filled with dangerous and unique creatures. She has to use her skills and the limited resources she has to survive and find a way off the planet. Another good one is when there are alternate timelines. For example, what if Samus didn't destroy the Metroids as she did in the main storyline? This can lead to a whole new set of adventures and challenges for her. Some fanfics also explore Samus's emotional side more, like how she deals with the loneliness of her job, which is quite interesting.
To write a Metroid fan fiction, start by choosing a theme. Are you interested in exploring the relationship between Samus and the Metroids? Or maybe you want to focus on the dark and mysterious areas of the Metroid world. Once you've chosen your theme, develop your characters. Even if you're using existing characters like Samus, you can give them new personalities or motives. Then, write in a style that suits the Metroid universe. It's often action - packed and full of exploration, so keep that in mind when writing your scenes.
I think 'Metroid: Other M' has a great story. It focuses on Samus's inner thoughts and past experiences more deeply. It shows her relationship with the Galactic Federation and her former comrades. The story is full of emotional moments and character development, especially when exploring Samus's vulnerability and her growth as a character throughout the game.
Some Metroid fan fictions are centered around alternate universes. In these, Samus might have different powers or face entirely new threats. For instance, she could be in a universe where the Metroids are friendly creatures and she has to deal with a new, more malevolent enemy. Fan fictions also often include crossovers, like Samus teaming up with characters from other Nintendo franchises in a Metroid - themed adventure.
The world - building is great. The different planets and areas in the Metroid games are full of unique creatures and landscapes. This helps in creating a rich story background.
The best Metroid stories are appealing because of their sense of isolation. Samus is often alone in vast and hostile environments, like in 'Metroid Prime'. This isolation makes the player really feel like they are in Samus's shoes, exploring the unknown. It's a unique feeling that not many games can replicate.