After rolling out 10 free PlayStation Mobile games and 5 blockbuster movies to owners of high-end Sony Xperia Smartphones, the Japanese company has made Gameloft's Modern Combat 4: Zero Hour free for the Xperia Z. One of the best FPS on mobile is free for the weekend, exclusively for owners of the Sony Xperia Z. On any other day, the game would cost you £4.99/$6.99 on the Google Play Store. To avail the offer, fire up the "Xperia Lounge" app and look for the promotional banner, which is valid only for this weekend. And before you start the download, make sure you are connected to a WiFi network. The game is pretty heavy, and the download size weighs 1.2 GB.