From the announcement:
B-Sieged: Sons of the Abyss is a fully cooperative castle defense board game that combines exciting combat action with classic resource management. In this thrilling defensive battle, 1 to 6 players control the mighty Heroes of Modhelm, who must fight back the encroaching Abyssal hordes, and endure until salvation arrives!
B-Sieged comes with 70 highly detailed, pre-assembled miniatures including 6 Heroes and the unstoppable hordes of the Abyss.
In B-Sieged, each player controls a Hero that must cooperate to defend the Citadel of Modhelm. Dark forces have surrounded the city and the entire realm will drown in flames if the Abyssal Hordes aren’t stopped! The Council has tasked the Messenger with escaping the siege to retrieve an ancient magic artifact that will break the enemy forces. The Citadel must endure the onslaught until the Messenger returns, and it’s the Heroes’ task to keep the Messenger safe and defend the Citadel.