5 18th Birthday Party Themes and Ideas You Should Try

By Ross | 1 Entertainment on Jun 21 2022

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Your 18th birthday is a special occasion that marks your transition into adulthood. It is the marker that changes your life from childhood to adulthood. You are entering the world of adulthood and with that comes a great deal of responsibility, some good and some bad.

Whether you're planning your own party or helping someone else celebrate, choose an activity that will be truly memorable. Here are some fun party themes to try out!

1) Murder Mystery Party 

Having a fun murder mystery-themed party will provide a great deal of suspense, allow you to practice your acting skills, give you a chance to play a character and add creativity to your party.

This theme works especially well for an adult birthday party; however, feel free to invite your close friends and family members to join in on the fun. You can even purchase a kit online to make planning easier.

2) Festival Garden Party

If you love the outdoors, then this is the party theme to choose! Enjoy your favorite food, drinks and music surrounded by trees, flowers and other natural elements in your own backyard.

To make the theme more festive and fun, search online for fun decorations, lighting and lanterns.

3) Extreme Sports 

Consider having the theme of your birthday party based on your favorite extreme sport, such as surfing, rock climbing, snowboarding or even skateboarding.

Invite your friends and family to join in your favorite sport. You can also have some fun trying out a new sport. If you want to keep costs low and not spend more than you have to, you can also skip having an actual theme and simply combine two elements that you enjoy, such as surfing and skateboarding.

4) Scavenger Hunt

Depending on the type of party you are having, you can have a fun scavenger hunt to find hidden objects. A scavenger hunt party works especially well for small groups of friends.

For the scavenger hunt, take your friends and family on a journey to find secret items, such as a photo that was taken a year ago or a piece of clothing that was worn before the age of 15. There are also some great online scavenger hunt clues that you can use to plan your own hunt.

5) Paintball

If your friends love adventure, then this is the perfect party theme for them. 

Have a paintball-themed party for your 18th birthday and challenge your friends to a fun and exciting game of paintball. You can visit a paintball arena and rent out a field for the day. You can also bring some paintball equipment and play in a field or vacant lot.

If you decide to play paintball in a field or vacant lot, never use an unlicensed gun. Be sure to follow all safety measures and wear protective clothing and glasses.


Once you have found the perfect theme, you can start planning the party. Having everything organised in advance will make sure that you and your friends have a memorable celebration of your 18th birthday.

No matter what theme you choose, 1 Entertainment can help you plan everything down to a T. We do event theming in London and can take on any kind of party you want to throw. Get in touch with us today to start planning!