Here we are, getting ourselves ready for a night of Halloween madness when suddenly we notice a tweet from Zee M Kane, editor in chief at The Next Web, saying that Doom Classic is in the app store. Before you could say the word 'Phobos' we were downloading it to our iPhones. iPhone Doom Classic features three episodes from the original game and a fourth episode called 'Thy Flesh Consumed'. There's a multiplayer mode but you can only play against people locally at the moment. It costs £3.99 and you can download it here.