<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.senchas.salvo"
    android:versionCode="1"
    android:versionName="1.0.0">
    <application android:icon="@drawable/icon" 
                 android:label="@string/app_name">
        <activity android:name=".TitleScreenAct"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
<!-- android:label=”@string/activity_dialog”
android:theme=”@android:style/Theme.Dialog” -->
        <activity android:name=".HelpAct"
                  android:label="HelpAct">
        </activity>
        <activity android:name=".GameSetupAct"
                  android:label="GameSetupAct">
        </activity>
        <activity android:name=".PlayerSetupAct"
                  android:label="PlayerSetupAct">
        </activity>
        <activity android:name=".RunGameAct"
                  android:label="RunGameAct">
        </activity>
    </application>
</manifest> 

                  <!-- android:screenOrientation="landscape"> -->

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.senchas.salvo"
    android:versionCode="1"
    android:versionName="1.0.0">
    <application android:icon="@drawable/icon" 
                 android:label="@string/app_name">
        <activity android:name=".TitleScreenAct"
                  android:label="@string/app_name"
                  android:screenOrientation="landscape">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
<!-- android:label=”@string/activity_dialog”
android:theme=”@android:style/Theme.Dialog” -->
        <activity android:name=".HelpAct"
                  android:label="HelpAct"
                  android:screenOrientation="landscape">
        </activity>
        <activity android:name=".GameSetupAct"
                  android:label="GameSetupAct"
                  android:screenOrientation="landscape">
        </activity>
        <activity android:name=".PlayerSetupAct"
                  android:label="PlayerSetupAct"
                  android:screenOrientation="landscape">
        </activity>
        <activity android:name=".RunGameAct"
                  android:label="RunGameAct"
                  android:screenOrientation="landscape">
        </activity>
    </application>
</manifest> 


Add screenOrientation = landscape to manifest.xml
Add screenOrientation = landscape to manifest.xml
