Though the most high-powered handheld video-game machine presently in the market is Sony's PlayStation Portable, it has some limitations when compared to other available options.

Today, the smaller the gadget, the better it is, and when compared to Apple's iPhone, which fits easily in the pocket, has already become a solid casual-gaming platform. Nintendo's DS too slides in with a little bit of effort; however even the slimmest version of the old PSP is still nearly 7 inches long, making it too bulky to carry on everyday jobs.

But now Sony has unveiled it newest model, dubbed PSP go, carrying a price tag of $250 and just 5 inches long (by 2.75 inches tall by a half-inch thick), a little bigger than an iPhone.

The device has a video screen, which is about a half-inch smaller (diagonally), though it has the same wide-screen ratio and looks as sharp as ever. Apart from this, the controls are placed on a panel that slides out from under the screen. They were initially placed on the sides of the screen.

The good news is that now, there is no slot or a drive for the Universal Media Discs that contain PSP games and videos and the users don't need to carry a UMD for each game. In fact, the users can store all their media on the PSP go's 16-gigabyte hard drive or on a tiny memory stick.

This will also save the users from going to the game stores, as they will require downloading software from Sony's PlayStation Store. As per Sony, users can avail over
225 games, along with 2,300 movies and 13,300 TV episodes.