Fortress Siege

生存下來的惡魔入侵，並找到永遠消除它們的方法。

Dark days are upon your land; twisted people have made a pact with demons, hell gates have been opened, and demon kind has started to roam this world. As time passes, more hell gates open and the demon army grows stronger and bolder. If they are not stopped, the realm will be overrun.

Your scholars speculate that if there is a ritual to summon the demons then there must be the one to banish them. Help them perform the ritual and defend them from demons who will try to stop them.