i found this whil navigating

That game looks sick. I have never played any of the other Warhammer games. Am I going to be missing out or just fine jumping in to the series at this point?

Since the WH40K lore is over 20 years old... Much of the story was played out in tabletop miniature wargames.\r \r In my experience the digital editions brush lightly on the lore and do away with any storyline focusing more on the thrill-ride than on the background of the Spacemarines.