Just a few suggestions/hints!

bridge-of-death.rb

@@ -1,12 +1,21 @@
+# Ruby style generally suggests limiting lines to 80 characters.  This can be
+#   a pain in the *** for long strings, and there are a number of ways to deal
+#   with that.  Heredocs, appending multiple strings...
 puts "He who would cross the Bridge of Death must answer me these questions three, ere the other side he see!"
+
+# check out print vs. puts, as it doesn't add a newline to the end
 puts "What..is your name?"
 name = gets.chomp
 puts "What...is your quest?"
 quest = gets.chomp
 
+# Try a case/when instead of an if/elsif structure.  This is basically 
+# a readability change, it is a bit more concise. Unlike many other
+# languages, it will work with Regexps, since it uses === instead of ==
 if name =~ /\barthur\b/i; 
     puts "What is the airspeed velocity of a coconut laden swallow?"
     swallow = gets.chomp
+    # Try redoing the newlines/spacing on this if/else/end block
       if swallow.downcase == "african or european"
       puts "I don't know that! AAAAAAAAAAAAaaaaaaaaaahhhhhhh!!!"
       else puts "You have been cast into the Gorge of Eternal Peril!"
@@ -27,8 +36,15 @@
     end
   else puts "Your father smelt of elderberries and your mother was a hamster! I fart in your general direction!"
 end
-$end
+$end  # what is this?
 
 
+# embedding multiple lines with ; is frowned upon in Ruby, although it does work
+# For short if statements, use:
+#   action if condition
+# instead of
+#   if condition
+#     action
+#   end
 if quest.downcase != "the search for the holy grail"; puts "You are uncultured swine!"
 end