If the birthday guy or gal is really into cars, a car-themed party makes an excellent option. Guests can dress in t-shirts, jeans, and car-themed decorations for the occasion.

A murder mystery is a fun theme for adults, allowing everyone to act out their favorite part of the story. Decorate with clapboards, movie cameras, and Hollywood signs to get the Party started!

Arcade Theme

Whether your favorite video games are from the ’80s or you’re a fan of Five Nights at Freddy’s, it’s easy to celebrate a birthday in style with a retro arcade theme. Rent classic video games, put on your best leg warmers, and throw on some Madonna and Michael Jackson music for an unforgettable bash.

If you want to give your website an eye-catching makeover, look no further than our Arcade Games WordPress Theme. This responsive design makes promoting your business on desktops, tablets, and mobile devices easy, with no coding or plugins required.

AVROTROS faced backlash when they chose Duncan Laurence and “Arcade” to represent the Netherlands at Eurovision in 2019. But it seems they picked wisely, as the song shot to number one on the Dutch singles chart and even cracked the top 30 in several European countries. It’s also gone viral on TikTok, where Harry Potter fans have used it to soundtrack scenes of Draco Malfoy and Hermione Granger falling in love. It’s a fantastic success story that shows it pays to be bold when choosing your adult birthday party theme.

70’s Party

Turn back the clock to the 1970s for a groovy adult party theme. Decorate with peace signs, flowers, lava lamps, shag rugs, and rock music. Dress your guests in tie-dye shirts, boho hats, and headbands. Costumes don’t need to be elaborate, either. A white bed sheet can be fitted into a toga with no sewing required!

Make this a dance party with a DJ and playlist of 70’s hits, or give your guests something to sing along to by adding a karaoke machine rental. Send your guests home with fun 70’s theme party favors like lip smackers, pet rocks, mood rings, and candy from that era.

This popular theme will have your guests reminiscing about their youth when Game of Thrones was first on the air. This is an easy party to decorate for, too! Make your party invitations as dramatic as the show with a castle wall or dragon sigil. Add a map of Westeros, or adorn it with faux torches and swords for a more medieval feel. Give your guests a little magic by hiring a comedian or magician, or even experts for amazing dancing parties like DivaDance for the whole party entertainment.

Superhero Party

Nobody can resist the allure of superheroes, whether it’s kids or adults. After all, who wouldn’t want to fly around and save the day? This theme is a great way to make a special day even more exciting.

Using a variety of brightly colored tableware, balloons, and party favors, you can put a unique spin on your superhero theme. Avoid using a specific commercial character and go for a more generic look. For example, using black paper or vinyl for windows, you can dress up rectangular glass storage jars to look like city skyline buildings. Large comic-style speech bubbles like “kaboom” add a fun touch to your superhero party decor.

Play games that test your guests’ strengths and powers. For example, have guests build the perfect disguise to hide their identities and then practice jumping over tall buildings to demonstrate their ability to leap through the air. Create capes for everyone with DIY instructions. Finish off the night by sending guests home with stylish superhero bag toppers and lightning bolt soaps for a treat that’ll make them feel like they can take on anything.

Fairytale Party

A fairytale party is a popular children’s birthday theme, but it can also be a fun adult party idea. Guests can dress as their favorite princess, fairy, or even all! This can be a general fairy theme or focus on specific characters like Tinkerbell, Barbie Fairytopia, etc.

Alternatively, you could have a bohemian party where guests are encouraged to embrace nature by dressing in flowy clothing and decorating with flowers, twigs, leaves, and greenery. This type of Party can be done indoors or outdoors. You can even add some outdoor-themed games and serve food suitable for a picnic.

Try a 40th birthday party with a Star Wars twist for a more modern theme. This can be an excellent way for adults to relive their childhood and have fun. You can even include some kid’s party games that adults will enjoy, such as musical chairs and pin the tail on the donkey! You can also make the costume theme fun by giving each guest DIY supplies and making it into a contest.

Gone Fishin’ Party

While you may think themed parties are just for kids, adults can enjoy them. Choose a party theme that will excite and inspire you, such as a classic movie genre or a specific decade like the groovy ’60s, disco ’70s, electronic ’80s, or wild ’90s. If you’re feeling adventurous, throw a witchy birthday bash with tea-leaf readings and Ouija boards.

If you prefer a more laid-back celebration, throw a Gone Fishin’ party. This fun party theme features rustic textures and cute food decor, including goldfish crackers “caught” on pretzel fishing rods and fish cookie favors. You can even create a real fishing “Bait Shop” with a fishing boat and bobber paper lanterns.

Host a football or basketball watch party to cheer on your favorite team if you’re a sports fan. Decorate with your favorite team’s colors and logos, serve game-day snacks, and even divide guests into groups with color-coded jerseys. GigSalad suggests hiring a local cover band to play the music everyone will love. Alternatively, make a bonfire and roast marshmallows.