In my opinion, 'Battlefield Earth' by L. Ron Hubbard is often considered one of the worst. The story is convoluted, and the characters lack depth. It fails to create a believable and engaging science - fiction world that can draw readers in.
I think 'The Time Machine 2002' (the novelization of the movie). It deviated too much from the original concepts of time travel in H.G. Wells' classic. It tried to be edgy and modern but ended up losing the essence of good science fiction, with a rather weak story line and uninteresting characters.
One example could be 'Plan 9 from Outer Space'. It has a really low - budget feel, with cheesy special effects and a convoluted plot that's hard to follow. The acting is also quite stilted, which makes it a candidate for the worst in the genre.
Poor special effects can also contribute. In science fiction, we expect a certain level of visual representation of the futuristic or alien elements. If the effects look really fake and amateurish, like in some low - budget science fiction films, it can drag the whole work down. For instance, a movie about intergalactic travel with really bad spaceship models and unconvincing alien designs. And also, a lack of originality. If it's just a rehash of old ideas without any new spin, it can be considered among the worst. Take those movies that just copy the basic premise of a well - known science fiction story but do it in a much poorer way.
Sure. 'Plan 9 from Outer Space' as a novel (based on the equally bad movie). It has a really silly premise and the writing doesn't do much to salvage it. There's no real depth to the alien invaders concept.
Well, 'The Core' is also not well - liked by many in the science fiction community. The science behind the concept of the Earth's core stopping is very iffy. It's full of plot holes and the characters are just running around trying to fix the problem without any real depth or development. It seems like a series of action scenes strung together without much thought to the overall story or the science it's supposed to be based on.
One characteristic is inconsistent characterization. The characters may act completely out of character compared to the original source material. In addition, the worst fan fictions usually lack proper pacing. They might rush through important events or drag on with uninteresting filler content.
Some might consider 'Twilight' as a bad fiction story. The plot mainly revolves around a rather unoriginal vampire - human love story, and the characters lack in-depth development in some aspects. Also, the writing contains a lot of purple prose.
One of the worst fiction books could be 'Fifty Shades of Grey'. The writing is often criticized for its poor prose and lack of literary depth. The characters are not well - developed, and the story mainly focuses on the over - hyped and somewhat controversial relationship, which overshadows any potential positive aspects of the plot.