Would you like your games to include such things as: Vast floating puddings, death worlds, governors plagued by pirates, mediaeval vampires, agricultural cooperatives, secret viruses, ancient dinosaurs, alien suicide bombers, doomsday devices, motorway ambushes, Greasy Kim's Bar and Diner, allergic atmospheres, scrap yard robots, jealous brothers, over zealous local police, Mysteriously Acquired Crazy Syndrome, unexploded minefields, migrating creatures, ex-wives, malfunctioning weapons, Dr Gostello's Amazing Intergalactic Psycho-circus, experimental androids, camera crews from local media companies? Then the Rogue Trader Plot Generator is for you! Grab your D100 (or borrow your Dad's if you're a youngling) or pick something that takes your fancy or get your GM to do it for you. Enjoy proper gaming!
And by way of comparison, this is what you get in the current 40k rulebook...