Lightning-borne storm scion or red-headed stepchild? Six years ago Games Workshop expanded their venerable Warhammer Fantasy Battle wargame by introducing the new, sexy Age of Sigmar. Out went the quasi-medieval Old World with its blocks of grubby foot knights, in came the multi-dimensional Mortal Realms and shiny, superhuman Stormcast Eternals. It had a warm reception – by which I mean one guy was so disgusted he set a thousand dollar model collection on fire – but six years is long enough for new blood to discover and adopt the setting. Barring a couple of digital card games and autobattlers, Storm Ground is Age of Sigmar’s first major outing in videogames – and you can buy it here, coincidentally. So, does Storm Ground land like a thunderbolt hurled from Azyr, or bubble up like a swampy fart in the rotten cauldron of Nurgle?