Fulgrim

I never really got into the Warhammer game itself — too crunchy — but the setting and world built up around it always fascinated me. The neo-Roman stylings of the Empire and its various hierarchies, the vast scale of space exploration and history, and the cosmic horrors lurking in the warp.

The Horus Heresy books haven't had a lot of the latter so far, which this book makes up for in spades. There's the introduction of the Eldar, a fallen race that had previously conquered the galaxy, and the gradual corruption of a Space Marine legion and the civilians accompanying them culminating in an absolutely horrifying set piece.

This is a gripping tale that stands on its own outside of the previous books in the series, and moves along at a tight clip. My favourite of the series so far.