When it comes to skating video games, I've pretty much played them all. From the earliest Tony Hawk titles that probably gave the genre a name for itself, to the more hardcore games like Skate, there's oodles of creativity that has come from allowing players the opportunity to ride on a plank of wood, and launch said plank of wood along grinding bars, up halfpipes, and down into bowls that look like they were swimming pools in a past life.The Touchgrind series takes this concept and throws away the controller. Instead of flicking an analogue stick left and right, your fingers become your legs, and the touch-screen of your iOS device is the board. As per usual, Touchgrind Skate 2 is a novel idea that can provide hours of great skating gameplay, but the learning curve is steep, and some players - like myself - may never fully click with the concept.Touchgrind Skate 2 begins with a set of tutorials that teach you each of the basics. Everything is essentially done in the same way that you might control a skateboard is real life - so for example, an ollie (aka making the board jump) is done by lifting your front finger and then quickly lifting the back one, to flick the board into the air.Other moves work in the same way, such as flicking the back of the board to kickflip, and holding the back of the board to spin around on the spot. For the most part, it's all very intuitive, and works exactly as you would expect it to.