I love a different style and focus of wargame. A game that takes a look at an important but somewhat obscure or rarely addressed historical topic, such as espionage or intelligence, and creates a gaming experience tailored around the events to highlight and evoke the difficulties and tension that would have been present. In January 2026, GMT Games announced such a game in Checkpoint Charlie, which is a solo or cooperative game focused on SIS espionage missions in Berlin in the 1960’s designed by Russell Brown. We have posted an interview with Russel and it was very well received and he has now agreed to create a series of History Behind the Cards to highlight the events of the 1960’s Cold War struggle in West Germany but also to share aspects about the game play and how it models the history.
*Note: The cards highlighted in this series and their event text, as well as any pictures used showing any of the various components, are still in the design and development process and as such event effects and text might still change prior to final development and publication. Also the art and layout of the cards are only for playtest purposes at this point and the game will enter the art department as it nears publication.
History Behind the Cards – Checkpoint Charlie from GMT Games – Card #10 Moscow Rules
“Moscow rules meant watch your back. London rules meant cover your arse.”
This quote from Mick Herron’s book, Slow Horses, may be what many people think of when the term Moscow Rules is used today, but there’s a bit more to it than that. Moscow rules were an unwritten set of procedures – spycraft protocols – to keep in mind when operating on the KGB’s home turf. Moscow Rules may have also been used as a cautionary declaration, a spy’s call to arms. In John Le Carrè’s spy novels, George Smiley lets his colleagues know that exceptional caution is warranted just by saying, “Moscow Rules.”
Moscow Rules could include communicating with extra caution, or in code. It could mean keeping a better eye out for someone following you, or being ready to defend yourself. But at its core, it meant that you were effectively operating in enemy territory and could no longer trust the people and places you once took for granted.
In Checkpoint Charlie, the Moscow Rules Event Card puts all of your assets on high alert, giving them a Tradecraft Marker if they don’t already have one. It also adds the Papers Item to the Mission, assuming that your assets dig deeper into their resources, perhaps pulling out old false identities reserved for emergencies. If you’re playing the campaign game, the Moscow Rules Card is not removed when it occurs, so it can show up on almost any mission.
In the next article in this series, we will take a look at ________.
In my opinion, this game looks extremely interesting and I am very much excited to learn more about it. I am appreciative to Russell and his efforts to bring us these cards and to write these entries to share with our readers. I am also very glad that this topic is being covered in a game and look forward to playing this one day soon.
We published an interview with the designer Russell Brown on the blog and you can read that at the following link: https://theplayersaid.com/2026/02/23/interview-with-russell-brown-designer-of-checkpoint-charlie-from-gmt-games/
You can catch up on the posts in this series to date by following the below links:
Card #4: Faceoff with the Soviets
Card #6: General Clay Steps In
If you are interested in Checkpoint Charlie, you can pre-order a copy for $48.00 from the GMT Games website at the following link: https://www.gmtgames.com/p-1211-checkpoint-charlie.aspx
-Grant
