After toying around with the control settings, and spending just as much time in the options than in game, it finally started to become somewhat playable. When you accidently RPG a door rather than open it, or blow yourself up when trying to move forwards, patience quickly wears thin. Yes Duke, you may be king of the world, but on the iPhone you shuffle around like a legless kitten trying to reach the cat litter before it’s too late.
To fire you tap on the centre of the screen, jump, crouch and open are additional buttons, and the inventory is within the pause screen. If the circles moved with your thumbs this could be a little smoother, but that doesn’t fix the fundamental issue of porting first-person shooter games to a touchscreen. Move your finger out of the circle and the input won’t be recognised.
Movement is controlled via two on-screen analogue sticks.