"Fire Emblem: Bells of Byelen" is a Mod of "Fire Emblem: The Sacred Stones". Built with a telephone-hack system, Team Adversity worked together to build a mechanically rich and story dense custom campaign, with many inspirations taken from "Fire Emblem: Thracia 776", like capturing enemies, fatigue, leadership stars, stealing weapons and more. Bells of Byelen boasts 73 playable characters, 60 on any given playthrough, with 24 chapters and 3 interludes.