An Unexpected Caller is a group hack using the Telephone format, seen previously in Call of the Armor, Bells of Byelen, and Embers Entwined. Those hacks stand out in large part due to their varied, unique characters and interesting custom maps. This hack features neither of those. The premise of this hack is simple. Make an entirely custom campaign, only using the maps and characters from the vanilla GBA games. While initially meant to be a short, lower effort hack after most of the team had just finished their work on Bells of Byelen, this project still ended up being a significantly longer endeavour than Call of the Armor, which we hope shows.