Want to enjoy exciting Android games or need a backup battery to charge your Android phone? Take a look at XOPAD, the open source USB game controller should be a nice solution.
XOPAD is a multi functional game controller designed to provide you an comfortable way to play those action packed mobile games on your Android phone. As we can see from the images, the game controller features retractable design for different Android handsets, while using integrated USB connector you can conveniently connect it with your Android phone, moreover, the USB gamepad comes with two analog sticks, one D-pad, four front-facing buttons, and four shoulder buttons in order that you can use it to enjoy your favorite Android games. Apart from that, the USB gamepad also features a built-in 3000mAh backup battery to charge your Android phone on the go, and its firmware is upgradeable and open source that allow developers to modify and improve the gamepad.
At present the team of XOPAD is raising fund at Kickstarter. Pledging $50 will let you own the USB game controller with backup battery. If you’re interested, jump to Kickstarter official site for more details.