My one recommendation going through the code would be to try and separate the game logic out a bit more. There are things spread between the subs, events and db

My one recommendation going through the code would be to try and separate the game logic out a bit more. There are things spread between the subs, events and db namespaces that could be abstracted out, and ideally separated from any knowledge of the re-frame db or other external concerns. This might just be my taste, but quite often I'd like to get to the point that I can unit test all of a game's logic, or even play a version of the game in the REPL, before hooking up what are then very thin subs and event handlers.