Suddenly, The Demon Lord's Labyrinth Appears: Deckbuilding Roguelike RPG

8/26/2026, 7:04:18 PM

Release date: 9/19/2025

Tags: #strategy #card-game #roguelike #card-battler #2d #fantasy #deckbuilding #gore

User Reviews

Score: 100%6 user reviews
Review Count: 6 reviews
Fetched At: 8/26/2026, 7:04:20 PM

Reference prices

Japan

¥ 470 (JPY)

Steam JP

$3.99 (USD)

Steam

Live Store Snapshot

Body text may reflect the state at publication time. For the latest sale, price, and review changes, prioritize the live price panel, review panel, and the Steam store listing.

Japan Price: ¥ 470
Global Price: $3.99
Price in Your Region: ¥ 470Prices as Steam lists them per country. What you are actually charged depends on your Steam account settings.Regional prices checked: 30 Aug 2026
Sale Status: Regular pricing
Price Checked At: 8/26/2026, 7:00:43 PM

Key highlight

Embark on a deckbuilding roguelike adventure fused with RPG elements in Suddenly, The Demon Lord's Labyrinth Appears. Choose from three unique classes and build your ultimate deck to conquer the dungeon.

Who this is for

Highly recommended for players who deeply enjoy the blend of deckbuilding, roguelike, and RPG elements. The distinct classes and highly strategic card battles offer a fresh experience with every playthrough.

Details

Overview

Suddenly, The Demon Lord's Labyrinth Appears is a fresh take on the card game genre, masterfully blending deckbuilding roguelike mechanics with classic RPG elements. Developed and published by Oyatsu Games Studio, this title invites players into a fantasy world where strategic card play is paramount.

Highlights

Features a compelling fusion of deckbuilding roguelike and traditional RPG gameplay.
Offers three distinct character classes—Hero, Rogue, and Wizard—each with a unique card pool for varied strategic approaches.
Engages players with fast-paced, strategic card battles and deep dungeon exploration.

Who It's For

This game is perfect for players who enjoy strategic card games, deckbuilding challenges, and the replayability offered by roguelike elements. Fans of fantasy settings and RPG progression will also find a lot to love here, especially those who appreciate thoughtful tactical combat.

Game Info

Developed by Oyatsu Games Studio, Suddenly, The Demon Lord's Labyrinth Appears was released on September 19, 2025. It supports both English and Japanese languages and is available as a paid title on Steam. The game also features multiplayer support and Steam Achievements, adding further depth to the experience.