Universal Horror Unleashed is an upcoming 110,000-square-foot (2.5-acre) Halloween-themed attraction under construction at Area15, an entertainment complex located in Las Vegas, Nevada.

In January 2023, Universal announced a new "horror experience" called Universal Horror Unleashed, which serves as the anchor tenant of the Vegas Immersive District, a 35-acre expansion of Area15.

[2][3][4] Unlike Universal's seasonal Halloween Horror Nights events, it is a permanent and year-round fixture, occupying a 110,000-square-foot (2.5-acre) space.

[9][10] The attraction will open in 2025 and consist of four haunted houses, based on The Exorcist: Believer[a], The Texas Chain Saw Massacre[b], "Universal Monsters", and "Scarecrow: The Reaping".

[12] In February 2025, Area15 announced their Vegas Immersive District is 60% pre-leased, including Universal Horror Unleashed.