The main feature is its unique world - building. It creates a vivid and detailed fantasy world where the protagonist has to navigate. The power system is well - defined, making battles and character growth interesting. Another feature is the complex characters, each with their own motives and backstories.
There are several isekai light novels similar to Overlord. For example, 'Konosuba'. It has a comical approach to the isekai concept, much like Overlord has some humorous elements. 'Re: Zero − Starting Life in Another World' is another one. It has a complex plot with time - loop mechanics, and like Overlord, it has a protagonist who has to face various challenges in a new world. And 'No Game No Life' is also a good choice. It features two siblings in a game - dominated world, similar to the game - related elements in Overlord.
The popularity can be seen in the numerous adaptations it has. There are anime adaptations which have further increased its reach. The fact that it has been translated into multiple languages also indicates its global popularity. Fans are drawn to the detailed storytelling and the interesting power dynamics in the story.
The Overlord novel series are best - selling light novels mainly because of its unique story. It combines elements of fantasy, adventure and strategic thinking. The main character is an overpowered entity in a new world, which is an appealing concept to many readers.
One characteristic is the transportation to another world. This could be a medieval - like fantasy world, a post - apocalyptic world, or even a world based on different rules of magic or technology.
I'm not aware of any extremely popular ones specifically named 'isekai uncle' right off the bat. However, there are so many isekai light novels out there that it's possible there could be some that feature an uncle - like character prominently. Maybe there are some niche or emerging ones that are starting to gain a following among isekai fans.
The plot twists are also a great part of these light novels. There are often unexpected turns, such as when certain characters' true loyalties are revealed or when new threats emerge that Ainz has to deal with in ways that are not always straightforward. It keeps the readers on their toes.
One popular series is 'In Another World With My Smartphone'. It follows the adventures of a guy who is reincarnated in a fantasy world with his smartphone. The story has a lot of interesting elements like magic, new races, and the protagonist uses his smartphone in creative ways to solve problems and gain power.
One popular 'isekai shihai light novel' series is 'Overlord'. In this series, a powerful gamer is transported to a fantasy world where he has incredible abilities and begins to build his own empire. Another is 'Re:Zero − Starting Life in Another World'. The protagonist Subaru has to face numerous challenges in a strange new world and has the unique ability to return by death. And 'That Time I Got Reincarnated as a Slime' is also well - known. The main character is reincarnated as a slime and gradually gains power and influence in the new world.