MONSTER MASSIVE Oct. 29, 8 p.m.

At a venue big enough to fit a bunch of USC football fans, more than 30 DJs will spin drum ’n’ bass, hip hop and eclectic beats with an open vodka bar for those 21-and-over.

For more information, visit www.monstermassive.com.

D.A.S.K. HALLOWEEN PARTY

Oct. 29, 8 p.m.

This Halloween hangout at the Hollywood Palladium has everything needed to celebrate the night of fright right: cigar bar, food court, henna artists, body painters, fire dancers, fortune tellers and crowds of up to 3,500 people.

For more information, visit www.hollywoodpalladium.com.

HALLOWEEN MASQUERADE BALL

Oct. 29, 9 p.m.

The Key Club is hosting a sweet little costume party. The night includes a sexy fashion show featuring corset-clad models, while Showtime’s new TV series, "Masters of Horror," hosts the VIP room.

For more information, visit www.keyclub.com.

HARLEYWEEN

Oct. 29, 30

Harley Davidson’s Riverside location is kicking off Halloween weekend with a big sale on motorcycle merchandise, a free Monster Poker Run and costume contests for the best-dressed bikers and their pets.

For more information, visit www.skipfordyce.com.

b> KNOTT’S SCARY FARM

Ongoing through Oct. 31

"Not recommended for wimps or children under 13." Be sure to read the fine print on Knott’s Scary Farm ads because you’ve been warned. Once you walk through the gates of the amusement park, be prepared to scream as rollercoasters and sneaky fright night tricks become the ultimate Halloween treat. Five scare zones will be filled with more than 1,000 monsters and stalking psychos lurking in the fog – which means you can run, but only the ghosts can hide. Twelve creepy mazes are trapped within the park, and three new trails have been created to add a special challenge for diehard trick-or-treaters who attend Halloween Haunt each year.

Besides looking over your shoulder for ghoulish predators, when Knott’s changes into Scary Farm, it’s best to be on the lookout for special coupons and giveaway days.

For more information, visit www.halloweenhaunt.com.

QUEEN MARY’S SHIPWRECK

Ongoing through Oct. 31

You’ve heard the rumors: This ship is haunted. But each year during October, it becomes completely terrifying as unsuspecting visitors become victims to eerie mazes placed throughout the decks and never-ending corridors that lead straight to mutants and maniacs. If you survive the first part of the night, though, you can drink your fears away in the ship’s Boiler Room Club or dance the night away at the three-level seaside party in Queen Mary’s Exhibit Hall.

For more information, visit www.queenmaryshipwreck.com.

WEHO HALLOWEEN CARNAVAL 2005

Oct. 31, 6 p.m.-midnight

All dressed up with no where to go? That’s not possible on Halloween in Hollywood. Every year WeHo closes down Santa Monica Boulevard (between Doheny Drive and La Cienega Boulevard) and surrounding businesses stay open late so people can party in the streets. Three stages of live music will haunt the air and, this year, "American Idol" host Ryan Seacrest will be crowned "Queen of the Carnaval." But be sure to dress to impress – first prize for the costume contest is $1,000.

For more information, visit www.weho.org/halloween.

PLAYBOY MANSION HALLOWEEN BASH

Oct. 31

If you’re wondering if Ryan Seacrest is the only celeb you can chill with this Halloween, well … maybe you’re right. This A-List bash at the Playboy Mansion is by invitation only, unless you can pull some strings.

For more information, visit www.playboy.com.