3160 Halloween Costume Contest. Join Chicago 3160 for the costume contest at midnight. Cash and prizes! 11 p.m., 3160 N. Clark Street, www.facebook.com/chicago3160

Berlin Nightcaps FROM OUTER SPACE. A special edition of the monthly variety show celebrating B-movie horror. Starring Adam Guerino & the Puterbaugh Sisters with special guests. 11p.m., 954 W. Belmont Ave., www.berlinchicago.com

Big Chicks Jai Ho ( rror ) All Bollywood, all queer, all night. Special Jai Ho performance at midnight. DJ Sachin. 10 p.m., 5024 N Sheridan Road, www.bigchicks.com

The Call Monster Ball Monster Ball with Scary Diva costume contest. Cash prizes. DJ Riley York. Free DeKuyper tasting and giveaways. No cover. 9 p.m., 1547 W. Bryn Mawr, www.cattlecallchicago.com

Cocktail Boys and Booze featuring Chicago Cher at Cocktail Join DJ Freddie Bain & Chicago's very own Cher plus hot & sexy go go boys! 10pm, Cocktail Chicago, 3359 N Halsted Street, http:// www.cocktailbarchicago.com

Crew Halloween Pub Quiz and Costume Contest. Pub Quiz: Halloween edition at 9 p.m. All Halloween-themed questions. Teams encouraged to dress up. Followed by Halloween costume contest at 11 p.m. 1st place $125, 2nd place $75, 3rd place $25 Crew gift card. 4804 N Broadway, www.worldsgreatestbar.com

Hydrate A-List Party feat. Austin Armacost, Logo's newest and sexiest star. For $25 enjoy a complimentary premium open bar along with appetizers and get to mingle with the new gay reality star. The party goes from 9:30 p.m.-midnight and the dance party goes until 4 a.m. 3458 N. Halsted St., www.hydratechicago.com

Parlour Medusa's Halloween. Join host Dave Medusa and DJ Teri Bristol. $4 Skyy cocktails and $3 Jäger bombs. 9 p.m., 6341 N Clark, www.parlouronclark.com

Scarlet Little Shop of Whores $4 well and domestics. $5 old school shots. DJ Dolo. 10 p.m., 3320 N Halsted, www.scarletbarchicago.com

Spin Shannel LIVE, Zander Mander and Shower Party. A special Shower Party in the back bar featuring Orlando and Anthony until 1 a.m. In the dance bar, Shannel and Zander Mander will be taking the stage at 11 p.m. and midnight for two dazzling shows. $5 cover & $10 VIP ( with meet & greet and photograph with Shannel ) . 800 W. Belmont Ave., www.spin-nightclub.com

Touché Black Out Party. Dare the dark at Touche's blackout party. 10 p.m., 6412 N Clark St., www.touchechicago.com

Saturday, Oct. 30

@mosphere Asians and Friends present One Night in Bangkok. Costume contest, burlesque show and surprises. $5 Death's Door cocktails ( gin, vodka, whiskey ) . 7 p.m., 5355 N. Clark St., www.atmospherebar.com

Berlin Devil's Night featuring Big Top Jojo's Towering Show of Wonder at 11 p.m. DJ Chester spins. 954 W. Belmont Ave., www.berlinchicago.com

Big Chicks Halloween Costume Contest—cash and award prizes for best costume, sexiest costume, scariest costume and best drag. Contest around 11:30 p.m. 5024 N. Sheridan Rd., www.bigchicks.com

Bobby Love's Bobby's big Halloween party with costume judging at midnight. 10 p.m., 3729 N. Halsted St., www.bobbyloves.com

The Call All Hallows Eve Eve with costume contest at midnight. Cash prizes. $5 Absolut cocktails. $5 Jameson. 1547 W. Bryn Mawr, www.cattlecallchicago.com

Club Krave "Spooktacular" Costume Party & Contest with 1st, 2nd and 3rd prizes. $4 cover after 9 p.m. includes one drink ticket. 8 p.m., 13126 S Western Ave, www.clubkrave.com

Cocktail Yelloween featuring DJs Dhanna and Psycho Bitch. Cocktail hosts it's Halloween costume contest featuring DJ's Dhanna and Psycho Bitch plus devilishly hot go-go boys. 10pm, Cocktail Chicago, 3359 N Halsted Street, http:// www.cocktailbarchicago.com

D.S. Tequila Co. Prison Break Costume Contest. First of two nights of costume contests. $1000 in cash and prizes, judged by crowd favorite. Be in by 10 p.m. to sign up, contest at midnight. 9 p.m., 3352 N. Halsted St., www.dstequila.com

The Glenwood Costume Contest. Have a boo-tiful night and win a cash prize at The Glenwood's Halloween costume contest. Contest begins at midnight. 10 p.m., 6962 N. Glenwood Ave., www.theglenwoodbar.com

Hydrate Join DJ Ralphi Rosario for this special Halloween blackout party. 10 p.m., 3458 N. Halsted, www.hydratechicago.com

InnExile Special Halloween costume party. No cover. Open until 4 a.m.! 9pm, InnExile, 5758 W 65th St, www.innexilechicago.com

Jackhammer Afterlife Halloween Party to Benefit Vital Bridges. Let's Make a Deal costume contest at midnight hosted by Chanel Exotique. Hundreds in cash and prizes. 10:30 p.m., 6406 N. Clark St., www.jackhammer-chicago.com

Maneuvers' Halloween Party. Come out to Joliet for a ghoulishly great time. Prize for best costume: $200 and a Las Vegas getaway for two. 10 p.m., 118 E. Jefferson St., Joliet, IL, www.jolietmaneuvers.com

North End Spooky-Oke with the costume contest. 10 p.m., North End, 3733 N Halsted St, www.northendchicago.com

Parlour Halloween Bash w/ Costume Contest at 1 a.m. with $200 1st prize, $100 2nd prize and $50 3rd prize. $3 caramel apple shots and $4 swamp water. Surprise guest host and performance. Portion of bar sales go to benefit 1vu ( www.1vu.org ) . $5 suggested donation at the door includes two raffle tickets. 10 p.m., 6341 N Clark St., www.parlouronclark.com

Scarlet Night of 1000 Zombies. Free zombie makeup 3-6 p.m. $5 wells, imports, and old school shots. DJ Konsept. 3 p.m., Scarlet, 3320 N. Halsted St., www.scarletbarchicago.com

Scot's Scaryoke: It's the Vampire's Prom at this year's Scaryoke karaoke. Come in costume and sing your favorite hits. 8 p.m., 1829 W Montrose Ave.

Spin Naughty Halloween Party. Tricks & Treats Drag Revue at 11 p.m. featuring Saya Nam, Phoenix O'Hara, Kinley Preston & Kaycee Ortiz. DJ Cody Domino follows. Go-go boys Ajit & Fabion will be in the Main Bar with VJ Teo. $5 cover. 800 W. Belmont Ave., www.spin-nightclub.com

T's Win big at T's costume contest. Cash prizes for best costume. Contest begins at 11:30 p.m.; 5025 N. Clark St., www.tsbarchicago.com

Touché Halloween Hi-jinks. Celebrate Halloween as only Touché can. Pumpkin fistin', bobbin' for dick and more. 10 p.m., 6412 N Clark St., www.touchechicago.com

Urbano Halloween Party. Sexy Urbano dancers Hurricane, Oscar, Rico and more. Spectacular effects, decor, Halloween dance performances. DJs Anton, Corona and Stoney spinning hip-hop, R&B and reggaeton. $5 cover w/costume. 11 p.m., Circuit, 3641 N. Halsted St., www.urbanochicago.com

Sunday, Oct. 31

14th Annual Halloween Parade Hosted by Miss Foozie. This year's theme is "Little Street of Horrors," taken from the Hollywood film and Broadway show "Little Shop of Horrors." 6 p.m., www.northalsted.com/pages/halloween_on_halsted/31.php

Berlin Saved By the HELL Halloween party. It's a block-rockin '90s Halloween with all '90s music and videos with DJs Greg Haus and Chester and special live vocal performances by DJ Adam El at 11 p.m. 954 W. Belmont Ave., www.berlinchicago.com

Carpenters Halloween The spine-shivering send-up of John Carpenter's slasher classic set to the The Carpenters' classic songs. $15-$25 per person. 8 p.m., Circuit, 3641 N. Halsted St., www.scootyjojo.com

Charlie's Halloween costume contest at 10 p.m. Prizes: 1st prize $150; 2nd prize $75; 3rd prize $50. After-hours dance party 1-4 a.m. 9 p.m., 3726 N Broadway, www.charlieschicago.com

Club Krave Star Finder Craig's Scary-Oke costume party with Tina and Brandi. Theme: Halloween songs. Prizes for 1st, 2nd and 3rd place winners. 7 p.m., 13126 S. Western Ave., Blue Island, IL, www.clubkrave.com

Cocktail Get the best seats for the Northalsted Halloween Parade with early haunting music sessions with DJ Uncle Milty at 8 p.m. DJ Pete Augusta presents the bloody jam factory 11 p.m. - 2 a.m. plus devilishly hot go-go boys! 3359 N. Halsted St., www.cocktailbarchicago.com

D.S. Tequila Co. Prison Break Costume Contest. Second of two nights of costume contests. $1000 in cash and prizes, judged by crowd favorite. Be in by 8 p.m. to sign up, contest at 10 p.m. 3352 N. Halsted St., www.dstequila.com

Hydrate Join hostess Cyon Flare as we kick off the Halloween celebrations at 6 p.m. with a simulcast of the parade on our TVs. After the parade, try your luck in the costume contest to win some of $1600 in cash and prizes. DJ Greg Drescher. 6 p.m., 3458 N. Halsted St., www.hydratechicago.com

InnExile Cross-Dress Karaoke Come dressed as your favorite recording artist and sing their songs on stage. 8 p.m., 5758 W 65th St., www.innexilechicago.com

Mary's Attic Scary-Oke! A frightening night of karaoke with Velicity Metropolis and the Bud Light Boys. Halloween Costume Contest at 11 p.m., along with raffles and other fun surprises. $3 "Blood Light" drafts. 5400 N. Clark St., www.hamburgermarys.com/chicago

minibar Fangtasia: True Blood Vamps and tramps will be on parade at this True Blood-style celebration. Costumes are encouraged. 10 p.m., 3341 N Halsted St., www.minibarchicago.com

North End Rocky Horror Halloween Party. Dress as your favorite Rocky Horror character and time warp the night away. 7 p.m., 3733 N Halsted St., www.northendchicago.com

Roscoe's Huge costume contest hosted by Frida Lay. 1st prize is $1500, 2nd prize is $750 and 3rd prize is $250. 9 p.m., 3356 N. Halsted St., www.roscoes.com

Sidetrack Watch the parade on our screens from 6 p.m. Stay tuned for the crazy costume contest at 10 p.m. with a $500 cash prize for best costume. 3349 N Halsted St., www.sidetrackchicago.com

Spin Watch the Halloween Parade at Spin, then stick around for our costume contest at 10 p.m. We will have two categories: Best Overall Costume and Best Drag. First prize in each category is an Apple iPad, second prize is $250 cash and third prize is $100. 800 W. Belmont Ave., www.spin-nightclub.com

T's Pumpkin Carving Contest Sign up by 2 p.m.; carving contest 3-6 p.m. Cash prizes for best pumpkin. 5025 N Clark, www.tsbarchicago.com

Touché Costume contest at 11 p.m. Cash prizes. $5 Jim Beam cocktails. 6412 N Clark St, www.touchechicago.com

Velvet Rope Halloween edition of karaoke. Sing in costume. $6 Martinis, $5 Long Islands, $3 cocktails. 7 p.m., 728 West Lake St., Oak Park, IL, www.velvetropeoakpark.com