Slitherine

Just as the title states...

I have played and finished all the Armageddon games/titles/releases and am just finding Sanctus Reach. What are the differences of both games? At first I thought this was another DLC for Armageddon.

It's a completely different game. Sanctus Reach is much more at a small unit tactical scale. I personally prefer it much more than Armageddon.