Power A has launched the Moga Controller, unveiled at E3 - a fully-featured controller that connects to Android smartphones via Bluetooth. Roughly as wide as the iPhone 4S and "as thick as a deck of cards," the controller doesn't seem to be a hindrance to use.

The controller also has a flip up smartphone holder, which fixes on to any smartphone, according to The Verge - including larger devices such as the Samsung Galaxy Note. "By providing an integrated mount, the Moga in effect becomes a Nintendo DS-style handheld," The Verge added.

It has dual analog sticks, shoulder, X-Y-A-B buttons and a D-Pad below the action buttons. In design, it resembles a hybrid between the OnLive and original Xbox - "Duke" - controllers.

The accessory is secured by rubberized pads, which have a "surprisingly tight" grip, and the arm can be raised or lowered depending on the type of device being used. Power A claims the controller lasts for 24 hours with two AAA batteries.

However, just eight Android games support the controller - a problem perhaps due to the lack of quality games on the platform - which includes Modern Combat 3: Fallen Nation, Six-Guns and Atari's Greatest Hits. More supported titles are coming but, as The Verge said, the number of Android controllers is also rising.

The controller also has a game manager, displaying compatible apps and shortcuts to download locations. Power A says this helps differentiate the controller from others on the market.

Users have requested Apple make a controller for its iDevices, citing the difficult-to-use virtual joysticks - partly due to the lack of tactile feedback, and partly because a hand covers the screen - but the company has remained quiet on support. Tim Cook, Apple's CEO, did admit the company was in the gaming space and the industry was "interesting" but wouldn't develop a console in the traditional sense. Whether he meant sans controller, or integrating the service into Apple TV, remains to be seen.

Not launching until holiday 2012, there's time to build support for Moga. No price has been announced.