Inside the Worldwide Flag Chase of Koen Roos

mrinal-gujare
18 Nov 2025
Mrinal Gujare 18 Nov 2025
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  • Koen Roos is a 36-year-old Dutch poker player and software engineer.
  • He cashes 15% of his buy-ins while traveling the world collecting poker flags.
  • Future plans include visiting Germany, Switzerland, and aiming for new destinations like Fiji and Mauritius.
Koen Roos
Image Credit: Poker.org
The conversation with Koen Roos explores the worldwide chase by the Dutch poker player. It traces his early games, travel routine, unexpected moments, key friendships, and long term plans as he pursues flags across continents.

For Dutch player Koen Roos, poker does not stop at the cards. His interest stretches across borders. From Austria to Vietnam, the 36 year old from Utrecht has built a record in the small but rising world of flaghunting. 

What began as small home games at 17 changed into a mission marked by curiosity, competition, and a steady drive to fill a passport.

The Travel Grind Behind a Growing List of Flags

A full time software engineer and a worldwide poker traveller, Roos has assembled one of the most varied sets of cashes in the game. 

Whether sharing food in Asia, dealing with travel issues in the Caribbean, or squeezing in another country before the year ends, he combines planning with a desire to see the world.

We met him during the Malta Poker Festival and the Battle of Malta. The talk ranged from his start in Utrecht to the global stops ahead. It also covered the network around flaghunting and why the chase keeps him moving.

Early Life and First Steps in Poker

Roos describes himself as a 36-year-old Dutch player based in Utrecht. He works in software and plays poker in his free time.

He began at 17 in home games that ran deep into the night. He and his friends later discovered small tournaments in a local pub and soon noticed their edge. His first official event at Holland Casino ended with a 3rd place finish after a three way deal.

The Moment That Sparked the Flag Hobby

A stop in Austria changed everything. Roos was eating in the casino restaurant when an older player asked to share the table. The talk was mostly about food.

The next day, Roos greeted him again. A friend then said the man was Casey Kastle, the top ranked flaghunter in the world. That moment introduced Roos to the idea and he decided it would be a fitting goal. Across the year, Roos averages two travel days per week for poker.

Surprising Stops on the Circuit

Vietnam stood out for its warm atmosphere. Players were relaxed and one even offered him a drink right away. The tables were large, so dealers used craps rakes to move cards and chips. He also found out that waiters could buy items from street vendors on request. Life on the move can feel isolating, especially in places where he does not know the language.

Koen Roos
Image Credit: Koen Roos provided/Poker.org/Damian Nigro

When a Flag Chase Goes Wrong

A trip to the Dominican Republic brought chaos. The event took place at a resort. When he returned for Day 2 and the final table, security refused to let him in without clearance even though he had been approved in advance. It took 45 minutes to resolve it.

By the time he arrived, the table had been running for 15 minutes. He won the event, which prevented that delay from turning into a lasting issue.

Cash Rates and the Reality of the Hunt

Roos estimates that he cashes roughly 15 percent of his buy-ins. Many countries only offer 10 to 12 percent ITM spots, sometimes even lower.

Handling Bustouts and Near Misses

His approach is simple. He sleeps and plays again. He has only bricked two countries outside Europe. 
Ongoing progress on the goal helps maintain focus.

Mapping Out the Global Schedule

For Europe, he made a tier list based on yearly event frequency. Countries like Norway and Monaco have only one major series, so they take priority over places such as France.

For other continents, he aims to combine as many regions as possible in a single run. All his Asian flags came in January as part of one trip.

Changing Tactics for Different Buy-ins

He adjusts his strategy by event size. When the prize pool matters, he will risk the flag near the bubble to build a stack. At lower stakes, he tightens up to secure the flag even though it opposes his usual style.

The Most Meaningful Results

Roos values his EPT side event win and his WSOP Circuit win. They were important because he felt fully in control and played his best game. He also liked the result in Paraguay because he does not plan to return.

People Met Along the Way

Meeting Casey before his passing meant a lot. He also met fellow flaghunter Manoel in Costa Rica and now they sometimes travel together. 

Melvin and Lachezar hosted him when he hunted flags in their home countries. There are many others he would have liked to know better, but short stays make this difficult.

Places That Felt Like Home

New Zealand stood out with friendly players and enjoyable games. He would visit more often if it was not so far from home. He also enjoys Scandinavia. Iceland and Norway are among his preferred stops.

Rivalry and Camaraderie Among Flaghunters

He often meets other flaghunters. When a country has been quiet or when a new region hosts an event, top hunters tend to show up. In the Dominican Republic, four of the top five were present because the country had not held a tournament for years. 

He sometimes travels with Manoel and Aaron. The group shares camaraderie with a touch of competition between him and Dominick.

The Remaining Countries and Future Plans

His 2025 list includes Germany, Switzerland, Romania, Serbia, Bahamas, Wales, and England. After that, he aims for any flag still missing. He hopes to find an event in Fiji and has heard strong reports about Mauritius.

What Comes After the Full Map

Roos does not see an end. Poker continues to grow and laws shift. New countries may emerge over the next decade.

Poker Heaven wishes him success on his journey. His Hendon Mob profile offers a full record of his path.

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