Repeat the acquisition and deletion of roguelike deck construction cards to strengthen your deck power and fight back against enemy automata. There are over 200 types of cards, each with their own unique effects, and by combining them, endless strategies are created. Card Categories This work features four card categories. Active cards are basic cards whose effects are applied immediately when used. Permanent cards can have permanent effects. Counter Card A card that can be activated at any time, including during your opponent's turn. It has a special effect that can interfere with the opponent's actions. It is a powerful card that will always be effective if you have an artifact card. You can start the game by selecting one of two characters: Lydia and Smyrna. Each character has their own characteristics and obtains different cards, so you can play with completely different strategies. Story: An artifact with power that cannot be explained with current technology. "Lydia" and "Smyrna" enter the dungeon to retrieve such an artifact, and get closer to the secret of the dungeon...