From the campaign:
War Eternal is a standalone game compatible with the hit cooperative deck building game Aeon's End. Players will struggle to defend Gravehold from The Nameless and their hordes using unique abilities, powerful spells, and an all new cast of dynamic characters. Featuring a number of innovative mechanisms, including a variable turn order system that simulates the chaos of an attack and deck management rules that require careful planning, War Eternal can be played alone or combined with other Aeon's End content for a game experience like no other.
I'd say the campaign's doing well... By that, I mean it's more than 5x funded with still 28 days left to go.