Fallen Legion Revenants — your choice will decide the fate of many. Manage the castle above and lead the heroes into battle in the underworld in this real-time role-playing game. Challenge yourself with real-time combat and an all-new GRID system that expands the possibilities of strategy. In a world covered in miasma, the floating castle is humanity’s last refuge. The land is scarred by plague-mutated monsters, and Welkin Castle is quarantined from the horrors below.