Séparé les classes dans des fichiers

lib/player.rb

@@ -1,9 +1,9 @@
 class Player
-  attr_reader :player_name, :hand, :score
+  attr_reader :name, :hand, :score
 
-  def initialize(player_name)
+  def initialize(name)
     @hand = []
-    @player_name = player_name
+    @player_name = name
     @score = 0
   end