An interactive, horror camping adventure is taking place at the Alameda County Fairgrounds starting at 8 p.m. tonight.

Great Horror Campout is a 12-hour overnight fright-fest that will have campers facing their worst nightmares in complete darkness.

Participants will experience a series of scares and encounter various "scareactors" that may forcibly handle, move, hood, chain or simulate torture. Campers will never be placed in real danger, according to the Great Horror Campout's website.

The "choose your own experience" style of the overnighter allows campers to choose the intensity of their camping experience.

For the more extreme horror experience, campers will participate in the Hell Hunt -- an interactive, horror scavenger hunt where campers will compete for the title of "Hellmaster." This is not your ordinary scavenger hunt. Campers may find themselves bathing in the blood of a "Pope Lick" or partaking in a sacrificial voodoo ritual to find the items.

In addition, campers will be placed in tents in the "high octane" zone where there are "fair game" to the creatures of the night.

For those weak-hearted campers, a less extreme horror experience is available. Campers will have a choice of activities including watching horror movies, roasting marshmallows, singing campfire songs, telling ghost stories, and arts and crafts. These campers' tents will be placed in the "Chicken Zone" where they can be free from the monsters.

If any camper gets too frightened, they can shout the safe phrase, "I want my mommy!", and the "scareactors" will stop their series of scares to that camper.

Tickets are now on sale to the Great Horror Campout.

One ticket includes admission for one camper, a buffet style dinner, a "Hell Hunt" collection bag, and a tent.

Tickets for the "Chicken Zone" are $99 with tents that could accommodate four people.

Tickets for the "high octane" zone with a four-person tent are $99. Tickets for a two-person tent in the "high octane" zone are $139.

Campers must be 18 years or older to participate.

For more information about the Great Horror Campout, visit their website or Facebook page.