I like a good challenge but I tend to get a little board with the usual mobile puzzle games like Tetris, Snake and Breakout. Which I why I was quite excited at the prospect of playing DoubleSkill, because it's an innovative format which requires an incredible amount of skill and dexterity. Unfortunately I didn't bank on the fact that this same formula also makes it extremely frustrating and I would go on to lose lots of hair. The premise of the game is to keep a ball balanced on a bar at the bottom of your screen by moving side to side using the stylus or thumbpad. This in itself is tricky but the twist in the tail is that at the same time you need to control a raquette at the top of the screen to prevent another ball from falling down. Because of the fact that the raquette and bottom bar controls work in tandem, this is a very tricky task. The challenge is engrossing and will have you coming back to torment your mind time and again. The presentation of the game is pretty poor though - the black-and-white graphics are pretty basic and blocky, and there's no menu system, so you're launched straight into the game every time, which becomes annoying after a while. According to the developer's site, DoubleSkill supports 240x320 and 480x640 screen resolutions, but when I ran it at 240x320, the bottom and sides of the screen were cut off, making it pretty much impossible to play properly. DoubleSkill is an interesting and innovative challenge that tests your dexterity but it's ultimately let down by its poor presentation.