anchor.diff:  Take a regular deck and remove all face cards, leave only the ace of spades and numbered cards (37 total)
   
   Start each player with starts with 5 cards from a shuffled deck
  +
  +## The Choice
  +Each round, players choose a card value to play
  +
  +> Multiple cards of different suits and identical value are treated as one card with no advantage or disadvantage to playing them
  +
  +## The Showdown
  +
  +Card values are compared and judged:
  +- Discard all cards of the lowest value
  +- If all cards are the same value, they are all discarded
  +- If the Ace of Spades was played, all cards are discarded
  +
  +If either player has the Ace of Spades, they may play it and choose any card value to discard
  +
  +> After playing the Ace, it transfers to the opposing player
  +
  +## The Aftermath
  +After the showdown, both players draw a card from the shuffled deck
   
   > Win by discarding your entire hand, or having the fewest cards when the draw pile is empty
    
  
positive.code: 
  Make a move or check the current game state
  
  ### Get the current game state [GET]
  Get information about a given game (including their current hand) for a player
  
  + Parameters
      + game_id (required, number) - unique ID for the game
  
negative.code: 
  ### Play a Card [POST]
  Choose a card value to play. 
  Until your opponent chooses their card for this round, you may update your choice
  
  Playing the Ace of Spades lets you discard any card while *also* discarding your opponent's card
  
  + Parameters
      + game_id (required, number) - unique ID for the game
  