Kai is 15 and gets packed off to Mutazione to nurse her grandfather Nonno back to health. Mutazione is free through the Epic Games Store mobile app until August 6th, and once claimed, it stays in your library. Our guide to downloading the Epic Games Store on mobile will walk you through the setup if you have not bothered before. Normally this is a paid download for $9.99 a pop, so free is a fair deal for something that won a fair few awards on release. If you want more in this vein once you have finished, our list of the best narrative-driven adventures on mobile has plenty to be getting on with.