It is the 41st Millenium, and Mankind dies upon the stars. It has been a millennium since the Emperor, Master of Mankind, was betrayed and struck down by his favourite son, the Primarch Horus. Since then the Imperium of Man has been beset on all sides by various foes, only surviving through its fanaticism to the Emperor. The vastness of the galaxy and the Imperium allows there to be many different cultures and battles, allowing for a great variety of wars, tales and men.
OOC- I’m trying to create a 40k RP, but I’m not sure how start it. If you’d like to create an open RP with characters, (for example a negotiation for trade goods between two different Imperial planets, a group of Space Marines purging a Space Hulk, an Ork drag race or even a group of guardsmen defending a vital area from an overwhelming swarm of Tyranids) you can try that, because I sure have no idea where to start. Alternatively you could just create profiles and short stories for various battles and factions.