A battle is brewing in the depths of the underworld, home to a diverse array of creatures. The purpose of this battle is to determine who will become the next Overlord, succeeding the current ruler. In order to claim this title, one must conquer the challenging labyrinths and obtain the coveted crystals. Get ready for a thrilling adventure filled with rogue-like gameplay as you journey through dungeon-like mazes and build your card deck! With five unique labyrinth themes centered around different types of cards, such as poison or graveyards, you will encounter new decks on each visit as the number of cards in the labyrinth increases. With over 300 different types of cards and 150 kinds of treasures at your disposal, the possibilities for creating powerful combos are endless. Will you be the one to rise up and claim the title of the next Overlord by conquering these mazes? The story takes place in the underworld, a realm inhabited by demons of all shapes and sizes. After ruling for 300 years, the 444th Overlord has announced a Selection Battle to determine their successor. It is a challenge that Sael, the son of the current Overlord, is eager to take on. The path to becoming an Overlord requires conquering labyrinths and collecting Sagan Crystals, but the reward is the coveted title itself. Some notable features of this game include turn-based combat using a deck of cards, reminiscent of Japanese role-playing games. The maze navigation also follows a rogue-like style, adding to the thrill of the adventure. With five distinct labyrinth themes, over 300 varieties of playing cards, and more than 150 kinds of treasure, this game offers a rich and immersive experience for players. Get ready to embark on an epic journey and experience the best of Japanese role-playing games and rogue-likes in this exciting underworld battle for the title of Overlord.