As announced by Xbox Wire:
An early Kickstarter success, Massive Chalice is a tactical strategy game set in an epic fantasy world. You step into the shoes of the Immortal Ruler, and your goal is to defeat a mysterious enemy known as the Cadence, in a war that will apparently last 300 years. Yes, that’s a pretty freakin’ long time, but you’ve got plenty of troops to command, marriages to forge, and bloodlines to uphold. An immortal’s gotta keep their multi-generation war machine fit and fresh, after all!
Massive Chalice will be available for free to all Xbox Live Gold members through the month of June!