Also W40k is a sci fi series where humanity is a galaxy wide empire fighting off alien invasions and internal rebellions on thousands of worlds at the same time. There's also demons that continuously come in to the universe from the 'Warp'. It's very grim and dark where billions die every day and billions more are born at the same time. One human is one amongst trillions and lives in a empire that cares little for the individual and sacrifices life freely. It's in a constant state of never ending war for centuries and millenium. Entire worlds are burned to stop the spread of chaos and heresy. That's what Khan was talking about.

This roleplay idea seems significantly more tame and far less grimdark. Which isn't a bad thing.