Four dedicated configurations offer maximum versatility for Razer Edge users: Tablet mode, Keyboard Dock mode, Gamepad Controller mode and Docking Station mode.

ENGADGET: Project Fiona becomes Razer Edge, starts at $999, sans controller

The D-Pad can be flipped to the opposite side of the controller using the small mode key so that lefties can join in the fun, too.

ENGADGET: Black Powder Media's Impulse Controller hands-on (video)

Steam's Big Picture Mode -- a TV- and controller-friendly version of Valve's widely used digital gaming service -- is the first volley in Valve's big living room push.

ENGADGET

Uncheck "Grab mouse in emulation mode" and "Use mouse as a controller" if you plan on using a gamepad.

ENGADGET: How to set up your Raspberry Pi to play Atari 2600 games

Garmin's concept positions the screen higher up on the dash in the driver's eyesight and combines it with a rotary infrared controller in convenient reach, a touch pad, and menu mode buttons.

ENGADGET: Garmin multi-sensor controller concept replaces touchscreen interface with in-console dial rig