Episodes range in levels of gore, most are mild, but some of them have scenes of graphic gore.

Some characters use the words "fuck", "shit", "holy shit" "fucking" but it's not often.

In the pilot, you can see from far away a man wearing a black hoodie who looks like he's smoking.

Much of the series revolves around many scientifical stuff and this leads to usage of many dangerous substances, though they're not explicitly drugs.

Many internal showings of dark and dangerous scientific projects.

Much of the series has a very hallucinogetic tone.

A man is clearly shown in a state of decomposition.

A man is pursued by a monster that emits human voices. The scene is long and very intense.

Entities, monsters appear in the series, sometimes chases occur.

The documentation of the Backrooms can be very unnerving.

Rated R for some graphic violence, disturbing images, and some language.