diff --git a/54_Letter/ruby/letter.rb b/54_Letter/ruby/letter.rb
new file mode 100644
index 00000000..c4c7a00c
--- /dev/null
+++ b/54_Letter/ruby/letter.rb
@@ -0,0 +1,45 @@
+#!/usr/bin/env ruby
+
+# Kinema
+# reinterpreted from BASIC by stephan.com
+
+puts 'Letter'.center(80)
+puts 'Adapted by stephan.com'.center(80)
+puts "\n\n\n"
+
+puts "Letter guessing game\n\n"
+
+puts "I'll think of a letter of the alphabet, A to Z."
+puts "Try to guess my letter and I'll give you clues"
+puts "as to how close you're getting to my letter."
+
+def win(turns)
+  puts "\nyou got it in #{turns} guesses!!"
+  return puts "but it shouldn't take more than 5 guesses!" if turns > 5
+
+  puts "good job !!!!!\a\a\a"
+end
+
+def play
+  letter = ('A'..'Z').to_a.sample
+  guess = nil
+  turn = 0
+
+  puts "\nO.K., I have a letter.  Start guessing."
+
+  until guess == letter
+    puts "\nWhat is your guess?"
+
+    guess = gets.strip.chars.first.upcase
+    turn += 1
+
+    puts 'Too low.  Try a higher letter.' if guess < letter
+    puts 'Too high.  Try a lower letter.' if guess > letter
+  end
+  win(turn)
+end
+
+loop do
+  play
+  puts "\nlet's play again....."
+end