21 details you might have missed in 'The Cabin in the Woods'

"The Cabin in the Woods" was released on April 13, 2012. If you need a quick refresher on the plot, keep reading ...

The Easter eggs start right at the beginning. The film's jump-scare title-card drop is just like the one in the horror classic "Funny Games."

The movie's title itself is a reference to horror classic "The Evil Dead," which follows a group of friends staying at a cabin in the woods.

In addition to the name and setting, a later reference on a white board pays homage to a rather infamous scene in "Evil Dead" in which one of the five main characters is sexually assaulted by a tree.

The characters also inadvertently summon the zombies using a diary filled with Latin phrases, eerily similar to "Evil Dead's" Necronomicon.

While most of the monsters in the film are famous mythological figures or pop-culture staples, you can see a shot of some real-life monsters, the KKK, in one of the cells.

You can also see some zombies from the popular "Left 4 Dead" video-game series.

The film was written by Joss Whedon, so, predictably, he threw a few nods to his work in the film, like a Reaver from his sci-fi cult classic series "Firefly."

Two of Whedon's frequent collaborators, Amy Acker and Tom Lenk, also have small roles, while another Whedon favorite, Fran Kranz, stars.

A shot of an elevator bay covered in blood is a nod to an iconic scene from "The Shining."

You can also spot a pair of creepy twins holding hands, just like in "The Shining."

Pausing the screen during the scene with the white board lets you see just how many horror Easter eggs are crammed into this movie.

Scream queen Jodelle Ferland has a small role as Patience Buckner.

During the scenes of Japan's attempts to complete the ritual, you can spot a clear reference to J-horror classics like "The Ring" and "The Grudge."

In Buenos Aires, it appeared that a giant ape, à la King Kong, was set to complete the sacrifice, but it was killed before it could succeed.

The Stockholm feed shows what looks like a destroyed village or research station ... just like in 1982 sci-fi horror film "The Thing."

One of the Facility's new employees was named Truman ... perhaps a nod to "The Truman Show," which focused on a man who was unaware he was being filmed, just like the main characters.

When the teens fall into the cellar, they are each called to different items. These connect to the monsters that are eventually revealed.

Sigourney Weaver's role as the unnamed director of the unnamed corporation behind the film's events is a cheeky nod to the "Alien" films, in which Weaver starred as Ellen Ripley.

Some fans believe the nods to the chemistry department messing up in 1998 are referencing the 1998 film "The Faculty."

The killers wearing eerie masks are reminiscent of the killers from "The Strangers."

The Hell Lord, who is credited as Fornicus, Lord of Bondage and Pain, looks like he could be the cousin of "Hellraiser" villain Pinhead.

The killer clown that's seen running rampant is referencing the most terrifying clown of all, Pennywise from "It."