King Arthur: The Roleplaying Wargame and all of the content released for it, the King Arthur: The Saxons expansion, the King Arthur: The Druids expansion, the King Arthur: Knights and Vassals DLC and the King Arthur: Legendary Artifacts DLC.
For those unfamiliar with the series, the game features real-time fantasy battles in a turn-based campaign map: Britannia - much like a fantasy version of Total War, except using Arthurian legend. The game also features roleplaying elements where heroes learn skills, spells, and abilities.
The game also features a "Morality Chart", in which every decision you make in the game will influence King Arthur’s position on the Chart, which determines which special content, allies, heroes, units, and developments are unlocked.
Paradox Interactive released the announcement trailer below.