How to install Android applications and games in .apk format on Samsung Galaxy S III? This is the question that a new Android user will ask. You can get most of the Android applications and games in Google Play Store (previously Android Market). However, certain useful Android applications cannot be found in Google Play Store due to policy issue. And they are in .apk format. You will get Install blocked ~ For security, your phone is set to block installation of applications not obtained from Android Market when tried to install it. No worry, there is a way to install Android applications and games in apk format on Samsung Galaxy S3.