I'm not entirely sure as I haven't read it specifically. But generally, if Naruto is described as 'godlike' in this fanfic, it might mean he has extraordinary powers far beyond the normal Naruto in the original series. And being a 'dark genius' could imply that he uses his intelligence in a rather unorthodox or morally ambiguous way.
You could try searching on popular fanfic websites such as FanFiction.net or Archive of Our Own (AO3). They have a large collection of Naruto fanfics, and you might be able to find it there by using the exact title in the search bar.
Well, 'Naruto: The Genius Beyond Measure' is also a wonderful 'godlike super genius naruto fanfic'. In this fic, Naruto is not only super - intelligent but also has unique powers that set him apart from the original story. It delves deep into how his new - found genius affects his relationships with other characters like Sasuke and Sakura. He uses his intelligence to come up with strategies that no one else could think of, and it really changes the course of the Naruto universe in this fan - made story.
Power corruption is a common theme. Since Naruto has godlike powers in these fics, there's often a struggle with how much power he should use and whether it changes him for the worse.
Power is a common theme. Since Naruto is 'dark godlike', power dynamics play a big role. Also, love and relationships within the harem are common. Each girl in the harem has a different kind of relationship with Naruto, be it based on admiration, friendship turned into love, etc.
Well, one popular 'dark godlike naruto harem fanfic' could be 'Naruto: The Dark God's Ascent'. In this fic, Naruto often displays a more mysterious and powerful side which is quite different from his original character in the manga. His relationships with the various female characters in the harem are also very complex, with a lot of character development and plot twists.
There's also 'Naruto: Dark God's Reign'. It explores a scenario where Naruto discovers some ancient and dark powers that change his path. He becomes a more feared and respected figure, with a different moral compass. The story dives deep into how his new powers affect his relationships with friends and foes alike.
One characteristic is the power - up of Naruto. He becomes extremely powerful, often to a god - like level. For example, he might be able to control elements in ways not seen in the original series. Another is the darker tone. His motives may be more self - serving or revenge - driven rather than the altruistic Naruto we know. He could be more willing to use extreme measures to achieve his goals.
There's 'Dark Naruto: The Unleashed'. In this fanfiction, Naruto is consumed by a dark power. His abilities are god - like in a sense that he can overpower many of his foes with ease. It explores how his friends react to this new, darker Naruto. They struggle to bring him back to the light while also having to face the threat he now poses to the shinobi world.