Body horror is horror about the human body being changed, damaged, invaded or fused with something else. Mutation, transformation, rot and infection are its usual tools. The fear comes from the body, the thing you can't get away from, no longer behaving the way it should.
What to expect
This is the subgenre most likely to make you look away. Expect grotesque imagery and a fair amount of gore, though the best of it isn't only about shock. Body horror often carries a sadder or stranger idea underneath, such as losing control, losing yourself or watching someone you know turn into something else. It can also be a slow-building dread first, with the worst imagery saved for later.
Because it's the subgenre with the most graphic material, it's worth reading the review itself before you start. We try to flag when a title gets graphic.
Movies, books and games
Each medium handles the images differently. In movies, practical effects and CGI decide whether a transformation looks real or silly. In games, the monster designs carry it, and what you see is shaped by how the game lets you move through it. In books, there's no picture handed to you, so the writing has to do the work, which can make it hit harder or land more softly depending on your imagination.
Which facets matter most
For movies, look at Violence & Gore and Practical Effects vs. CGI, plus Villain/Monster Quality. For games, Enemy/Monster Design is the key facet, along with Visual Design & Art Direction. For books, Vividness (how clearly the writing puts images in your head), Psychological Dread and Villain Quality all matter, since the imagery has to be both clear and frightening.
From our reviews
Yvonne's Black River Orchard (4.5) review starts out eerie, then escalates into what she calls truly grotesque body horror once the orchard's influence takes hold. She says the book gave her real stress and anxiety over the visualization of some scenes, which is what you want from the writing in this subgenre. Psychological Dread is a 4 and Villain Quality is a 4. She is also clear that the main characters don't have plot armor, so the danger feels real. If you're squeamish about intense body horror, her review says to skip it.
Josh's Still Wakes the Deep (4.5) is the other side of it. Its creature design pulls from John Carpenter's The Thing, with twisted, fused figures that stay recognizably human. Josh calls the body horror bold, but the game doesn't overexpose it, and the creatures keep distorted fragments of who they used to be, so encounters feel personal and tragic and not just gross. Enemy/Monster Design scored a 4, and the sound design and the collapsing rig do a lot of the supporting work.
Between the two, you can see the range. One is a sprawling, character-driven book that gets graphic over time. The other is a tight game about helplessness, where the transformed creatures make you feel something besides disgust.
Is it for you?
If you like horror with real physical stakes and a strong stomach, and you want your monsters to mean something, this is worth a look. If you're sensitive to graphic imagery, start with another page of the guide, and read the review itself before you commit. We'll add more here as we review more movies, books and games in this vein.