Recs.
Updated
A Warhammer 40,000 roleplay game, where take the roll of an agent of the inquisition, trying to purge the Chaos from your ranks.
Specs
Pros
Pro In-Depth character creation and well-supported for long campaigns
The Universe of Warhammer 40K is very rich in Lore, and Dark Heresy has a very detailed Point-Buy system with expansions such as Ascension in order to allow characters to level-up past the concepts of the base game, into things like Sisters of Battle, Vindicare Assassins, or even Inquisitors themselves.
Cons
Con d100 task resolution
Percentile dice are the most frustrating task resolution mechanic out there. Most systems that use them, and DH is no exception, give you incredibly low odds to succeed at basic tasks with a newly create character. The thing your character is supposedly good at will probably only have a 40-45% chance of succeeding, with AT MOST +20% for a very easy task. You can just not bother rolling for the things you're not so good at.