One API to rule them all. Wrong fantasy franchise, perhaps, but that’s the idea behind Vulkan, the snazzy open-source successor to OpenGL, alternative to Microsoft’s DirectX and something that might shake up gaming on everything from PCs to phones. But what’s an API? And why should you care? We’ll come to that. For now, if Vulkan is everything it’s cracked up to be, it’ll make games run faster and look better on your existing PC. It might make that SteamOS thing a goer, too. Anyway, version 1.0 is out, so the chattering weberati will be casually trading Vulkan references to prove their PC gaming prowess. Time to bone up. Plus I’ve just sat through a five-hour keynote stream on Vulkan from GDC 2016. So humour me. This stuff is actually quite interesting.