The first PC "Earth Defense Force 6" additional mission pack is now available. More than 15 challenging missions that depict a prequel leading to "5"

The first PC "Earth Defense Force 6" additional mission pack is now available. More than 15 challenging missions that depict a prequel leading to "5"
The first additional mission pack for the PC version of "Earth Defense Force 6", "Lost Days", was released on August 29th. More than 70 new weapons will be introduced....

The linked article is in Japanese.