Theme fusion Xbx XPERIA is a free personalization app by notappss for Android devices. As the name suggests, this app provides a theme for Xperia phones with Xbox customization. The app offers a navigation bar with the symbols of the Xbox buttons and changes the colors of the device. The theme is optimized for Marshmallow and is highly recommended to use with Xperia Home Beta. However, it's worth noting that devices C4, C5, M5 do not apply navigation bar buttons unless they are updated to Android 6.

It's important to mention that the app developer asks for support by buying some of their other themes. Additionally, the developer offers custom themes for order and contact information is available on their website. Overall, Theme fusion Xbx XPERIA is a great app for those who love to personalize their devices with gaming themes.