diff --git a/Gruntfile.js b/Gruntfile.js
index 6981bb2..250a884 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -228,6 +228,11 @@ module.exports = function(grunt) {
         dest: 'build/closure/closure_compiled_binary.js'
       }
     },
+    karma: {
+      unit: {
+        configFile: 'karma.conf.js'
+      }
+    },
     nodewebkit: {
       options: {
         build_dir: './dest/desktop/', // destination folder of releases.
@@ -262,6 +267,7 @@ module.exports = function(grunt) {
   grunt.loadNpmTasks('grunt-replace');
   grunt.loadNpmTasks('grunt-ghost');
   grunt.loadNpmTasks('grunt-open');
+  grunt.loadNpmTasks('grunt-karma');
   grunt.loadNpmTasks('grunt-leading-indent');
   grunt.loadNpmTasks('grunt-node-webkit-builder');
   grunt.loadNpmTasks('grunt-contrib-copy');
@@ -269,8 +275,11 @@ module.exports = function(grunt) {
   // Validate
   grunt.registerTask('lint', ['leadingIndent:jsFiles', 'leadingIndent:cssFiles', 'jshint']);
 
+  // karma/unit-tests task
+  grunt.registerTask('unit-test', ['karma']);
+
   // Validate & Test
-  grunt.registerTask('test', ['lint', 'compile', 'express:test', 'ghost:default']);
+  grunt.registerTask('test', ['lint', 'compile', 'unit-test','express:test', 'ghost:default']);
 
   // Validate & Test (faster version) will NOT work on travis !!
   grunt.registerTask('precommit', ['lint', 'compile', 'express:test', 'ghost:local']);
diff --git a/karma.conf.js b/karma.conf.js
index 91d9f73..1580b4b 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -60,11 +60,11 @@ module.exports = function(config) {
 
     // start these browsers
     // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
-    browsers: ['Chrome'],
+    browsers: ['PhantomJS'],
 
 
     // Continuous Integration mode
     // if true, Karma captures browsers, runs the tests and exits
-    singleRun: false
+    singleRun: true
   });
 };
diff --git a/misc/scripts/package-windows-executable.cmd b/misc/scripts/package-windows-executable.cmd
index 5d37241..f8fd6c4 100644
--- a/misc/scripts/package-windows-executable.cmd
+++ b/misc/scripts/package-windows-executable.cmd
@@ -12,34 +12,14 @@ SETLOCAL
   set APP_BIN="%PISKEL_HOME%\dest\desktop\cache\win\0.9.2"
   set MISC_FOLDER=%PISKEL_HOME%\misc
   set RELEASES_FOLDER=%PISKEL_HOME%\dest\desktop\releases
-  set DEST_FOLDER=%RELEASES_FOLDER%\win
+  set DEST_FOLDER=%RELEASES_FOLDER%\piskel\win\piskel
 
-  ECHO "Building Piskel executable for Windows ..."
-
-  ECHO "Creating release directory ..."
-    MKDIR "%DEST_FOLDER%"
-  ECHO "DONE"
-
-  ECHO "Packaging executable ..."
-    COPY /b "%APP_BIN%\nw.exe"+"%RELEASES_FOLDER%\piskel\piskel.nw" "%DEST_FOLDER%\piskel-raw.exe"
-  ECHO "DONE"
-
-  ECHO "COPYing dependencies ..."
-    COPY "%APP_BIN%\*.dll" "%DEST_FOLDER%\"
-    COPY "%APP_BIN%\nw.pak" "%DEST_FOLDER%\"
-  ECHO "DONE"
 
   ECHO "Updating Piskel icon -- Using Resource Hacker"
-    %RESOURCE_HACKER_PATH%\ResHacker -addoverwrite "%DEST_FOLDER%\piskel-raw.exe", "%DEST_FOLDER%\piskel-exploded.exe", "%MISC_FOLDER%\desktop\logo.ico", ICONGROUP, IDR_MAINFRAME, 1033
-    DEL "%DEST_FOLDER%\piskel-raw.exe"
+    %RESOURCE_HACKER_PATH%\ResHacker -addoverwrite "%DEST_FOLDER%\piskel.exe", "%DEST_FOLDER%\piskel-logo.exe", "%MISC_FOLDER%\desktop\logo.ico", ICONGROUP, IDR_MAINFRAME, 1033
+    DEL "%DEST_FOLDER%\piskel.exe"
   ECHO "DONE"
 
-  ECHO "Boxing application to single file -- Using Enigma Virtual Box"
-    %VBOX_PATH%\enigmavbconsole "%MISC_FOLDER%\desktop\package-piskel.evb"
-    DEL "%DEST_FOLDER%\*.dll"
-    DEL "%DEST_FOLDER%\nw.pak"
-    DEL "%DEST_FOLDER%\piskel-exploded.exe"
-  ECHO "DONE"
 
   PAUSE
   explorer "%DEST_FOLDER%\"
diff --git a/package.json b/package.json
index e5c3964..a24fa24 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "grunt-node-webkit-builder": "0.1.21",
     "grunt-open": "0.2.3",
     "grunt-replace": "0.7.8",
+    "grunt-karma": "~0.8.2",
     "karma": "0.12.17",
     "karma-chrome-launcher": "^0.1.4",
     "karma-jasmine": "^0.1.5",