How do you like your shoot ’em ups: vertically scrolling and difficult to get hold of? If so, you might dig XIIZeal [official site], which has come to PC years after various versions bounced around arcades and consoles in Japan. Please pardon my ignorance of shmup history, but I believe it’s an updated version of 2002’s XIIStag by Triangle Service. As I understand it, your best chance to play Zeal was to import an Xbox 360 shmup compilation for £30. Well, now it’s on Steam for £8.99.