While some might argue that the golden age of FPS games is right now, there are a lot of those who are nostalgic for the first big era in the history of shooter games.
The Warhammer universe is vast and varied, with numerous games available to help immerse you further. The latest is that of Warhammer 40,000: Chaos Gate - Daemonhunters as it goes storming onto Xbox and PlayStation.
With a little more polish Warhammer 40,000: Rogue Trader could have been a strong contender as a genre leader, but as it is, we have to pull back on that a bit. Yet still, if you like Warhammer or CRPGs, this is an easy sell.