Don’t know where to post this but I figure I’d do it here. A group of my friends who are familiar with 40K but don’t play tabletop wanted me to do an RPG for them to get them deeper in the world. After some discussion of what they wanted we settled on Deathwatch.

Two problems though. First, I’ve never played it! Not that big a deal, I have all the books and everything. But these are space marines. How the hell am I supposed to give them a challenge? How am I to gauge what they can an can’t handle to fight against?

Second: I’ve never DMd before. While their are campaigns in the books none of them really appeal to me and like I do with all my armies, I’d rather build a custom lore around things in universe. I’m currently building the system, the campaign and everything detailing it out. But how do I know if things are too detailed. Or if I don’t have enough?

No one I know has ever DM’d a game like this before, so I can’t get their input. So I’ll throw this out into the community. How much detail is too much? Are there any DMs out there that could help me with building this world? What kinda scenes would you like to see?