diff --git a/script/dumpplayer_spec.rb b/script/dumpplayer_spec.rb
new file mode 100644
index 00000000..e1bb4a16
--- /dev/null
+++ b/script/dumpplayer_spec.rb
@@ -0,0 +1,12 @@
+require 'gema'
+
+describe Gema::DumbPlayer do
+before :each do
+@dp = Gema::DumbPlayer.new("X")
+end
+
+it "Debe existir un metodo move" do
+@dp.respond_to?("move").should == true
+end
+
+end
diff --git a/script/humanplayer_spec.rb b/script/humanplayer_spec.rb
new file mode 100644
index 00000000..2835c01a
--- /dev/null
+++ b/script/humanplayer_spec.rb
@@ -0,0 +1,15 @@
+require 'gema'
+
+describe Gema::HumanPlayer do
+before :each do
+@hp = Gema::HumanPlayer.new("X")
+end
+
+it "Debe existir un metodo move" do
+@hp.respond_to?("move").should == true
+end
+
+it "Debe existir un metodo finish" do
+@hp.respond_to?("finish").should == true
+end
+end
diff --git a/script/minimaxplayer_spec.rb b/script/minimaxplayer_spec.rb
new file mode 100644
index 00000000..7d422c21
--- /dev/null
+++ b/script/minimaxplayer_spec.rb
@@ -0,0 +1,21 @@
+require "gema"
+
+describe Gema::MinimaxPlayer do
+before :each do
+@mp = Gema::MinimaxPlayer.new("X")
+end
+
+it "Debe existir un metodo move" do
+@mp.respond_to?("move").should == true
+end
+
+it "El metodo move debe tratar de evitar la derrota" do
+@board = Gema::Board.new(["X", "X", "O", "O", "O", "X", " ", "O", " "])
+@mp.move(@board).should == "c1"
+  end
+
+it "El metodo move debe tratar de ganar" do
+@board = Gema::Board.new([" ", "O", "X", " ", "X", " ", "O", "O", "X"])
+@mp.move(@board).should == "a1"
+  end
+end