diff --git a/app/app.iml b/app/app.iml
index 74d7e06..7932f75 100644
--- a/app/app.iml
+++ b/app/app.iml
@@ -67,28 +67,25 @@
       <sourceFolder url="file://$MODULE_DIR$/src/test/jni" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/src/test/rs" isTestSource="true" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/assets" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/bundles" />
+      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/blame" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/classes" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/coverage-instrumented-classes" />
+      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/debug" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/dependency-cache" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/dex" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/dex-cache" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/exploded-aar/com.android.support/appcompat-v7/23.1.0/jars" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/exploded-aar/com.android.support/design/23.1.0/jars" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/exploded-aar/com.android.support/recyclerview-v7/23.1.0/jars" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/exploded-aar/com.android.support/support-v4/23.1.0/jars" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/jacoco" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/javaResources" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/libs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/lint" />
+      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/jniLibs" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/manifests" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/ndk" />
+      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/mockable-android-23.jar" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/pre-dexed" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/proguard" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/res" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/rs" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/symbols" />
+      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/tmp" />
+      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/transforms" />
       <excludeFolder url="file://$MODULE_DIR$/build/outputs" />
       <excludeFolder url="file://$MODULE_DIR$/build/tmp" />
     </content>
diff --git a/app/src/main/res/layout/welcome_dialog.xml b/app/src/main/res/layout/welcome_dialog.xml
index 9676aff..fbc0556 100644
--- a/app/src/main/res/layout/welcome_dialog.xml
+++ b/app/src/main/res/layout/welcome_dialog.xml
@@ -6,7 +6,7 @@
     android:orientation="vertical"
     android:gravity="center"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="wrap_content"
     android:padding="@dimen/activity_horizontal_margin">
 
     <TextView
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 5cc262b..ba5c99a 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -81,5 +81,10 @@
     <string name="help_privacyInfo">Privatsphäre Information</string>
     <string name="pref_timer_reset">Zeit zurücksetzen</string>
     <string name="pref_timer_reset_summary">Beim zurücksetzen des Spielfeldes wird die Zeit auch zurückgesetzt.</string>
+    <string name="welcome">Willkommen zu Privacy Friendly Sudoku.</string>
+    <string name="field_select_description_headline">Spielmodus:</string>
+    <string name="field_select_description">Wische oder drücke auf die Pfeile auf der linken und rechten Seite um den Spielmodus zu ändern.</string>
+    <string name="difficulty_description_headline">Schwierigkeitsstufe:</string>
+    <string name="difficulty_description">Drücke oder wische über die Sterne um den Schwierigkeitsgrad zu ändern.</string>
 
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index a4bd5ad..f16c620 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -71,5 +71,12 @@
     <string name="win_show_game">Mostrar campo de juego</string>
     <string name="win_text">Felicitaciones!</string>
     <string name="win_time">Tiempo:</string>
-    <string name="help_privacyInfo"> Información de Privacidad</string>
+    <string name="help_privacyInfo">Información de Privacidad</string>
+    <string name="difficulty_description">Presione o deslice para comenzar a cambiar la dificultad.</string>
+    <string name="difficulty_description_headline">Dificultad:</string>
+    <string name="field_select_description">Deslice o aprete el boton de la flecha a la izquierda o a la derecha para cambiar el modo de juego.</string>
+    <string name="field_select_description_headline">Modo de juego:</string>
+    <string name="pref_timer_reset">Resetear Tiempo</string>
+    <string name="pref_timer_reset_summary">El tiempo se resetea tambien, cuando el tablero se resetea.</string>
+    <string name="welcome">Bienvenido a Privacy Friendly Sudoku.</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 9cf8de7..95542ce 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -72,4 +72,11 @@
     <string name="win_show_game">Montrer champs de jeu</string>
     <string name="win_text">Félicitations!</string>
     <string name="win_time">Temps:</string>
+    <string name="difficulty_description">Appuyez ou faites glisser les étoiles pour changer la difficulté.</string>
+    <string name="difficulty_description_headline">Difficulté:</string>
+    <string name="field_select_description">Faites glisser ou appuyez les boutons flèches à gauche et à droite pour changer le mode de jeu.</string>
+    <string name="field_select_description_headline">Mode de jeu:</string>
+    <string name="pref_timer_reset">Réinitialiser le minuteur</string>
+    <string name="pref_timer_reset_summary">Aussi réinitialiser le minuteur en réinitialisant le jeux en cours.</string>
+    <string name="welcome">Bienvenue à Privacy Friendly Sudoku.</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index b3b257e..043bbd9 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -72,4 +72,11 @@
     <string name="min_time">Лучшее время:</string>
     <string name="more_info">Больше информации на:</string>
     <string name="help_privacyInfo">Информация конфиденциальности</string>
-</resources>
\ No newline at end of file
+    <string name="difficulty_description_headline">Сложность:</string>
+    <string name="difficulty_description">Коснитесь для изменения уровня сложности.</string>
+    <string name="field_select_description">Используйте стрелки слева и справа, либо пролистайте режимы для выбора режима игры.</string>
+    <string name="field_select_description_headline">Режим игры:</string>
+    <string name="pref_timer_reset">Сброс таймера</string>
+    <string name="pref_timer_reset_summary">Сброс таймера при сбросе доски.</string>
+    <string name="welcome">Добро пожаловать в Privacy Friendly Sudoku.</string>
+</resources>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index 706e786..5e2e5de 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -14,9 +14,6 @@
     <string name="win_hint">提示：</string>
     <string name="win_show_game">显示游戏版</string>
     <string name="win_best_time">新纪录！</string>
-
-    <!-- habe hier mal alle rein kopiert, damit du eine art template hast, was noch fehlt -->
-
     <string name="new_game">开局</string>
     <string name="menu_settings">设置</string>
     <string name="menu_highscore">统计</string>
@@ -75,5 +72,12 @@
     <string name="help_delete_summary">删除你选择的数字</string>
     <string name="header_help">帮助</string>
     <string name="help_privacyInfo">私人信息</string>
+    <string name="difficulty_description">扫或者点击星星换难度</string>
+    <string name="difficulty_description_headline">难度</string>
+    <string name="field_select_description">扫或者点击左边箭头或者右边肩头换游戏模式</string>
+    <string name="field_select_description_headline">游戏模式</string>
+    <string name="pref_timer_reset">定时复位</string>
+    <string name="pref_timer_reset_summary">定时复位如果重置领域</string>
+    <string name="welcome">欢迎</string>
 
 </resources>
\ No newline at end of file