What to do in Atlanta this weekend:

If you’re a gamer, head to Dreamhack Atlanta for an immersive experience with professional eSports tournaments, amateur and college gaming tournaments, LAN party with your own computer, expo, live music and more Again.

Mania: the tribute to ABBA

8 p.m. on Sunday, November 20. $27.50 and up. Buckhead Theater, 3110 Roswell Road NE, Atlanta. 404-843-2825.

Enjoy ABBA hits as performed in Mania: The ABBA Tribute, which has sold out across the UK.

Georgia Tree Festival

Saturday November 19 and Sunday November 20, with additional dates. Adults $19.46, children 4 to 12 $14.30, children 3 and under free. Georgia World Congress Center Lounge A3, 285 Andrew Young International Blvd. Northwest, Atlanta.

See beautifully decorated trees, watch performances, let the kids do crafts, play and visit Santa and more. Food and local vendors will be available. Proceeds from this annual event are donated to Wellspring Living, a Georgia-based nonprofit that helps victims of human trafficking and sexual exploitation.

Cobb

Cobb County Public Safety Foundation 5K

Credit: From givesignup.org

Credit: From givesignup.org

8:30 a.m. 5 km run/walk, 9:30 a.m. sprint for children. Saturday November 19. $40 5K, $30 kids dash. The Atlanta Battery, 800 Battery Ave., Atlanta.

Run to show your support for Cobb County First Responders. The event includes first responder vehicles and displays, a kids’ race with Blooper, the Atlanta Braves mascot, and post-race hot chocolate and coffee.

Pop-in for family fun: the big chicken

9am-3pm Saturday Nov 19 Free. Marietta History Center, 1 Depot St., Marietta. 770-794-5710.

Visit the Marietta History Center for crafts and activities inspired by the Big Chicken. Additionally, Rosalind and Maggie Bunn, the authors of “All Aboard, Georgia,” will do a book signing from 2-4 p.m. Bach 2 Rock will offer a free lesson from 12:30 p.m. to 1:15 p.m. and a show at 2:30 p.m.

Civil War Snipers

11am-11.30am Saturday 19 Nov. Free. Kennesaw Mountain Battlefield State Park, 900 Kennesaw Mountain Drive, Kennesaw. 770-427-4686 ext 0.

Join a ranger for a short walk and discuss snipers in the military and their role in the Civil War.

DeKalb

Atlanta Chili Cook Off

Credit: From the Atlanta Chili Cook Off Facebook Page

Credit: From the Atlanta Chili Cook Off Facebook Page

1pm-5pm general admission and 12pm-5pm VIP. Sunday November 20. $20 and up. Brook Run Park, 4770 N. Peachtree Road, Dunwoody.

Taste chili from over 50 foodies, restaurants, and caterers while listening to live music.

Fall family camping in the backyard

4 p.m. Sat. Nov. 19-9 a.m. Sunday, Nov. 20 $45 non-members, $30 members. Dunwoody Nature Center, 5343 Roberts Drive, Dunwoody. 770-394-3322.

Camp overnight with your family under the stars at the Dunwoody Nature Center. You can join an educator on a night hike or go on a self-guided hike and bring a picnic lunch and s’mores to roast over a campfire.

Agri Fest

10 a.m. to 2 p.m. Saturday, November 19. Davidson-Arabia Mountain Nature Preserve, 3787 Klondike Road, Stonecrest. 404-998-8384.

Join in the fun at the first Agri-Fest hosted by Arabia Mountain High School’s Earth Tomorrow Club and enjoy games, contests, prizes, food and more. Games are cash only.

North Fulton

Hiking Day

Saturday Nov. 19 from 12 p.m. to 2 p.m. Free. Preston Ridge Community Center, 3655 Preston Ridge Road, Suite 100, Alpharetta.

Celebrate National Hiking Day by bringing the family for a guided hike on the beautiful Alpharetta Greenway trails and participating in craft workshops, education and more.

Avalon Lighting

Credit: Jessica McGowan / [email protected]

Credit: Jessica McGowan / [email protected]

1pm-8pm Sunday 20 Nov. Free. Avalon, 400 Avalon Blvd., Alpharetta. 770-765-1000.

Get into the holiday spirit with the opening of Avalon on Ice, a tree lighting, an appearance by Santa and festive music.

“Babies in Toyland”

7 p.m. on Friday November 18 and 2 p.m. and 7 p.m. on Saturday November 19. $22.50 and up. Blessed Trinity High School Theatre, 11320 Woodstock Road, Roswell, 678-315-4094.

Bring the family to watch “Babes in Toyland,” presented by Atlanta Dance Company. It is narrated by Mother Goose and tells the story of Little Bo Peep’s mischievous sheep.

Gwinnet

Brilliant light show

Credit: From the Shine Lightshow Facebook page

Credit: From the Shine Lightshow Facebook page

6-10 p.m. Friday, Nov. 18 to Sunday, Nov. 20, through Jan. 1. Coolray Field, 2500 Buford Drive, Lawrenceville.

Drive your car through over a million lights in facilities that are all in sync with holiday classics.

Vintage market days

10 a.m.-4 p.m. Friday, Nov. 18 and Saturday, Nov. 19 and 10 a.m.-3 p.m., Sunday, Nov. 20. $10 and up, free for children 12 and under. Gwinnett County Fairgrounds, 2405 Sugarloaf Parkway, Lawrenceville.

Shop for the holidays in over 50,000 square feet of indoor space where you can shop for vintage and antique items, handmade treasures, clothing, jewelry, plants and more.

Sports on screen: UGA v UK

3:30 p.m. start of the scheduled match. Saturday November 19. Town Green, 5140 Town Center Blvd., Peachtree Corners. 678-691-1200.

Haywire and watch the Georgia Bulldogs take on the Kentucky Wildcats in an SEC East game broadcast on an outdoor screen. Bring chairs, blankets, small tables and coolers if you wish. You can also buy food and drinks at a downtown restaurant.