About us

A small studio building communities across the globe.

Since 2006, Freeze Tag has been turning ideas into reality as an early innovator in the mobile gaming industry. After Munzee, Inc. joined the company in 2017, we made location-based gaming our whole world, and we've been exploring it ever since.

Today, 13 people across the United States, the United Kingdom, and Portugal run 5 games played by people around the globe. Our goal is simple: bring people together to play, explore, and discover the world around them.

Incorporated: February 2006 in Delaware
Registered office: 360 E. 1st Street, #450, Tustin, CA 92780
Where the team is: McKinney, Texas; remote across the US; Derby, Bedford and London in the UK
Stock: OTC: FRZT. See investor information
Fiscal year: Ends December 31

A worldwide dream team

Robert Vardeman, Jr.

President and Director

Team member since 2013 Outside London, England

Robert is President of Freeze Tag and a member of the Board of Directors, appointed to both on 18 October 2017 when Munzee merged with and into the company.

From 2013 to 2017 he was President of Munzee, Inc., setting the company’s direction and running its day-to-day operations. He was the visionary behind Munzee’s suite of applications, and led both brand and sales.

Before Munzee he taught mathematics to fourth through eighth graders at Allen I.S.D. for fifteen years. He holds a Bachelor’s in Elementary Education from Dallas Baptist University and a Master’s in Administration and Supervision from the University of Phoenix.

Louise Vardeman

Director · Munzee Events

Team member since 2015 Outside London, England

Louise was appointed to the Board of Directors on 22 July 2025.

She also runs every Munzee player event in the world. Since taking the role in May 2015 she has personally handled more than 1,500 of them.

She came from sales, as an account manager for Diageo, and holds a BS in European Business Studies from the University of Wales, Swansea. She is fluent in French and races road bikes.

Dylan Derryberry

Creative Director

Team member since 2014 McKinney, Texas

Dylan is Creative Director across all Freeze Tag brands and the team lead for Eventzee. He manages the worldwide release of campaigns, products and updates, and sits between the designers and the developers so that what ships is what was designed.

He also handles content, social and marketing, and works directly with Eventzee clients and partners. He joined in June 2014, when the company was still Munzee.

His background is journalism — writing, videography and graphic design — and he holds a BA in Journalism from the University of Kansas. He lives in McKinney, Texas with his wife, daughter and three dogs.

Guilherme Miguéis

Lead Programmer

Team member since 2007 Lamego, Portugal

Guilherme develops and maintains the codebase across iOS, Android, Windows and macOS, and has been lead programmer on more than a dozen titles.

He works in C, C++, Objective-C, Java, Python, JavaScript and TCL, with DirectX and OpenGL. He started programming at eleven on a Sinclair ZX Spectrum, and left an architecture degree to do it full time. He joined Freeze Tag in 2007.

Mari Rann

Product Manager, Munzee

Team member since 2013 Huntington Beach, California

Mari has been product manager across Garfield GO, ZeeTours and now Munzee. She joined in 2013 and has overseen the launch of more than a dozen mobile games.

She runs development and production for Munzee — gameplay, UI and UX, QA, social marketing and customer support. She holds a BS in Computer Game Science from the University of California, Irvine, and is one half of Freeze Tag’s cosplaying duo.

Tamara Sahagun

Product Manager

Team member since 2015 Chino, CA

Tamara is a Product Manager for Munzee and Painted Rocks (when she can spare the time for it!). She joined Freeze Tag in 2015, and became part of the Munzee Team officially in 2017.

She has fingers in many pies — her day-to-day usually involves tracking down bugs reported by players, writing SQL queries to produce reports and analyses, writing whimsical copy for new Munzee game pieces and social media posts, creating images for said posts, brainstorming new ideas, and assisting in QA testing. Every once in a while, she is involved in designing the events and attributes needed for analytics reporting for new apps.

She graduated from the University of California Irvine, where she holds a Bachelor of Science in Computer Game Science. You may see her at Munzee events in California, where she is known as one half of Freeze Tag’s cosplaying duo!

Robbie McGuire

Technical Product Manager

Team member since 2016 North Dallas, Texas

Robbie is a Technical Product Manager at Freeze Tag, where he helps guide the development and evolution of Munzee and WallaBee. He works across product design, game systems, backend development, and player engagement, translating ideas and player needs into new features and experiences.

Since joining Munzee, Robbie has played a hands-on role in designing and implementing gameplay systems, developing backend services, analyzing player behavior and game data, and improving the performance and reliability of existing systems across WallaBee and Munzee. His technical work primarily focuses on PHP and MySQL, allowing him to work directly with the systems behind the products you know and love.

When not working, Robbie can usually be found spending time with family, playing games with friends, throwing plastic at one of his local disc golf courses, or tending to his never-ending list of yard priorities.

Sam Hindess

Lead Programmer, CuppaZee

Team member since 2023 Bedford, England

Sam created CuppaZee, the Munzee companion app. He started playing Munzee in 2013, aged eight, and built CuppaZee first as a third-party website and then as a mobile app before joining the company that made the game he was building for.

Wylie Derryberry

Customer Success, Eventzee

Team member since 2019 McKinney, Texas

Wylie helps Eventzee clients design and launch their hunts, and stays with them from onboarding through to the end of the event. She is also a photographer, and lives in McKinney, Texas with her husband and daughter.

Andy Cameron

Illustrator and Graphic Designer

Team member since 2016 Derby, England

Andy is an illustrator and designer for Munzee and WallaBee.

He first started working creating the items for the WallaBee app and helped to redesign it. He now works mainly creating illustrations and graphic design for Munzee. He very much enjoys bringing the ideas to life and continuing to develop their brand.

Andy studied Fine Art at the University of Derby and prior to joining the team worked as a graphic designer and freelance illustrator for many years.

Craig Michell

Gameplay team member, podcast and video lead

Team member since 2025 Originally Australia, now Alabama, USA

Craig Michell’s Munzee journey began in 2015, when he discovered the game in Australia. What started as a fun outdoor activity quickly became much more meaningful. During a difficult period in his life, Munzee gave Craig a reason to get outside, enjoy the sunshine and fresh air, explore new places, and connect with people. It became an important part of his journey through PTSD and helped give him something positive to focus on.

In 2021, Craig moved from Australia to the United States. His Munzee adventure continued, and at an event he had the opportunity to meet Munzee President Rob Vardeman. Craig shared some ideas about the game and its community, beginning a relationship that would eventually lead to something much bigger.

In 2025, Craig officially joined the Munzee team as a game tester and became involved with the podcast social media team. What began as helping behind the scenes quickly grew into a much larger role. Craig now serves as Munzee’s Podcast Communications Lead, contributing to gameplay development and testing while also helping lead the communications, podcast, video, and audio side of the community.

Craig has been part of producing and publishing the Munzee Podcast every week since 2024, working behind the scenes on recording, editing, sound, video, social media, and promotion.

From discovering Munzee as a player in Australia to becoming part of the team helping shape the game and its community, Craig’s story is a reminder of just how far a simple game can take you, sometimes literally around the world.

Scott Foster

Co-Founder of Munzee and Creator of SkyDrift

Team member since 2011 Little Elm, TX

Scott co-founded Munzee in 2011 and served as its VP of Technology for eight years. He built the API and website, led every part of development, and played a key role in bringing WallaBee to Freeze Tag.

Today he leads development on SkyDrift, which he created with Rob. He is a self-proclaimed “vibe coder” and uses AI in nearly everything he builds, including the website you’re reading right now.

Away from work, Scott is usually off having fun with his family, whether that’s exploring Japan or floating down a river. When the house finally quiets down, you’ll find him playing video games, anything from Final Fantasy to Counter-Strike.

Timothy Larsen

Production and Shipping

Team member since 2025 Twin Cities, Minnesota, USA

A Munzee player since 2011, Tim is having fun being a part of the team that brings Munzee to the world. Still enjoying playing the game, Tim is excited to see where Munzee goes next and being a part of making that happen.

Tim is coordinating, manufacturing, and shipping out game pieces and QR code stickers to players all over the world on a daily basis. Tim most enjoys interacting with players at Munzee events, hearing their feedback and helping them interact with Munzee in new and better ways.

Tim has lived and worked in the Twin Cities area of Minnesota his entire life, and lives with his wife Krista, spending much of his time with his adult children and his grandson.

The worlds we've built

Games that get you moving

A real world adventure Munzee

Collect and trade WallaBee

Create custom experiences Eventzee

Spread kindness & community Painted Rocks

Ambient exploration SkyDrift

Talk to us

Press, partnerships, investor questions or player support. Head to the contact page to start up a conversation.

Contact Freeze Tag