I suppose I should use SCM...

.gitignore

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+pkg/*
+*.gem

Gemfile

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+gemspec

README

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+SHUT UP YOU LITTLE BRATS!!!

Rakefile

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+require 'rake'
+require 'rake/clean'
+
+require 'rake/gempackagetask'
+gemspec = eval(File.read('littlebrat.gemspec'))
+Rake::GemPackageTask.new(gemspec) do |p|
+  p.gem_spec = gemspec
+end
+
+require 'rake/rdoctask'
+rd = Rake::RDocTask.new("rdoc") do |rdoc|
+  rdoc.title = "#{gemspec.name} (#{gemspec.version}) - #{gemspec.description}"
+  rdoc.options << '--line-numbers --inline-source --main README'
+  rdoc.rdoc_files.include(gemspec.files)
+  rdoc.main = 'README'
+end
+
+require 'rake/testtask'
+Rake::TestTask.new(:test) do |test|
+  test.libs << 'lib' << 'test'
+  test.pattern = 'test/**/test_*.rb'
+  test.verbose = true
+end
+
+task :default => :test
+
+begin
+  require 'rcov/rcovtask'
+  Rcov::RcovTask.new do |test|
+    test.libs << 'test'
+    test.pattern = 'test/**/test_*.rb'
+    test.verbose = true
+  end
+rescue LoadError
+  task :rcov do
+    abort 'RCov is not available. In order to run rcov, you must: gem install rcov'
+  end
+end
+
+task :test => :check_dependencies

bin/littlebrat

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+require 'littlebrat'
+
+# TODO: Grab the config values from the arguments
+
+# Time to shut the little brats up!
+# LittleBrat.new(800, 600, false).show
+LittleBrat.new.show

lib/littlebrat.rb

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+# -*- encoding: utf-8 -*-
+require 'gosu'
+
+class LittleBrat < Gosu::Window
+  LETTER_LIMIT = 60
+  def initialize width=Gosu.screen_width, height=Gosu.screen_height, fullscreen=true
+    # Full resolution, fullscreen
+    super width, height, !!fullscreen #force to boolean for Gosu
+    self.caption = "Leave me alone you little brat!"
+    # The letters the little brat hits on the keyboard
+    @letters, @new_letters = [], []
+    # Load up the instructions to show at first
+    @letters.push Instructions.new(self)
+    @beeps = load_beeps
+    @redraw = true # init this because it needs to be true or false
+  end
+
+  def load_beeps
+    %w{ AMFMBEEP.WAV
+        ARRP.WAV
+        BADUMM.WAV
+        BEEPCASI.WAV
+        BEEPCOME.WAV
+        BEEPDOUB.WAV
+        BEEPMETA.WAV
+        BEEPMULT.WAV
+        BEEPPURE.WAV
+        BEEPROBO.WAV
+        BEEP_FM.WAV
+        KLICK.WAV
+        TEESWING.WAV
+        TYPEKEY.WAV
+        TYPESPAC.WAV
+        WATER.WAV
+    }.map do |f|
+      Gosu::Sample.new(self, "sounds/#{f}")
+    end
+  end
+
+  def update
+    if !@new_letters.empty?
+      # Add new letter to the queue
+      while str = @new_letters.shift
+        @letters.push(Letter.new self, str)
+      end
+      beep # Only beep once per game loop
+      # Keep the total number of letter sprites at a managable number
+      @letters = @letters[-LETTER_LIMIT..-1] if @letters.size > LETTER_LIMIT
+      # We updated the letters, so we need to redraw
+      @redraw = true
+    end
+  end
+
+  def draw
+    @letters.each { |letter| letter.draw }
+    @redraw = false # Done drawing, don't need to draw no more
+  end
+
+  def needs_redraw?; @redraw; end # Don't paint/draw unless we need to
+
+  def needs_cursor?; false;   end # Don't show the cursor, even on Ubuntu
+
+  def button_down id # Callback, not on main thread
+    close if close? # Close if we press the right keys
+    @new_letters.push str_from_button_id(id)
+  end
+
+  def str_from_button_id id
+    self.button_id_to_char(id) || random_letter
+    # random_letter
+  end
+
+  def random_letter
+    @random_letters ||= %w{ ▲ ▼ ☻ ♠ ♣ ♥ ♦ ☀ ☁ ☂ ✔ ✘ ☎ ✈ ✪ }
+    @random_letters[rand @random_letters.size]
+  end
+
+  def close?
+    (button_down? Gosu::KbEscape        or
+     button_down? Gosu::KbLeftControl   or
+     button_down? Gosu::KbRightControl) &&
+    (button_down? Gosu::KbQ         or button_down? Gosu::KbW or
+     button_down? Gosu::KbZ         or button_down? Gosu::KbC or
+     button_down? Gosu::KbBackspace or button_down? Gosu::KbDelete)
+  end
+
+  def beep
+    @beeps[rand @beeps.size].play
+  end
+
+  class Instructions
+    def initialize window, text = "Let's shut those little brats up!"
+      @image = Gosu::Image.from_text window,
+                                     "#{text}\nPress CTRL+Q to exit",
+                                     Gosu::default_font_name,
+                                     100
+      @color = 0xffffff00
+      @x, @y = 10, 10
+    end
+
+    def draw
+      @image.draw @x, @y, 1, 0.5, 0.5, @color
+    end
+  end
+
+  class Letter
+    def initialize window, text
+      text_height = random_text_size window
+      @image      = Gosu::Image.from_text window, text,
+                                          Gosu::default_font_name,
+                                          text_height
+      @color      = random_color # Image text is white, so this is to modulate it
+      @x, @y      = random_position window, text_height
+    end
+
+    def draw
+      @image.draw @x, @y, 1, 0.5, 0.5, @color
+    end
+
+    def random_text_size(window)
+      (window.height / (rand + 1)).to_i
+    end
+
+    def random_color
+      color       = Gosu::Color.new 0xff000000
+      color.red   = random_byte
+      color.green = random_byte
+      color.blue  = random_byte
+      color
+    end
+
+    def random_byte
+      rand(255 - 40) + 40
+    end
+
+    def random_position window, text_height
+      [ rand * window.width  - (text_height / 4),
+        rand * window.height - (text_height / 4) ]
+    end
+  end
+end

littlebrat.gemspec

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+# -*- encoding: utf-8 -*-
+Gem::Specification.new do |s|
+  s.name        = "littlebrat"
+  s.version     = '0.1.0'
+  s.platform    = Gem::Platform::RUBY
+  s.authors     = ['Mike Moore']
+  s.email       = ['mike@blowmage.com']
+  s.homepage    = "http://rubygems.org/gems/littlebrat"
+  s.summary     = "A handy little app to entertain the kiddos"
+  s.description = "Because kids like to smash buttons"
+
+  s.required_rubygems_version = ">= 1.3.6"
+  s.add_dependency(%q<gosu>, ["~> 0.7.24"])
+  s.rubyforge_project         = "littlebrat"
+
+  s.files        = Dir.glob 'lib/**/*.rb'
+  s.executables  = ['littlebrat']
+  s.require_path = 'lib'
+end