The correct answer to this question is No. Though Dark has many aspects of it that may be unsettling, such as the location of the show and some of the secrets revealed, it is not a scary show. It will not make a person jump or be scared to sleep with the lights off. However, it is thrilling as each episode and secret is revealed. This is why it is considered a thriller with scientific themes. Overall, anyone can watch Dark, even those that are not traditionally fans of thrillers, because it will not frighten a person or scare them from watching.
One thing that you can expect about “Dark†is this: if you are looking for a show that will seem eerie and will make you feel like you are unsettled, this may be one of the best ones to try. If you are searching for something that is conventionally scary, this may not be the right series for you. There are some people who get scared easily who might become scared, especially because of the cave scenes, but if you are someone who is used to different scary things, then this will not be a problem for you at all. They also make use of sound effects that may add to the “scare factor†a bit.