RPG Valkyrie Dungeon is a free-to-play game developed by Just Idea. The game is available on the Android platform and falls under the category of card games. It is a "Super Easy and Easy RPG" game where you collect cute characters and battle. The game is designed to be stress-free and quick to play, making it perfect for players who don't want to spend money on mobile games.

The game offers a fully automatic battle system where various factors such as status, skills, and attributes determine the outcome. Characters can be acquired through free gacha, and the game offers a sense of accomplishment by allowing players to challenge the dungeon. The characters automatically become stronger just by turning the free gacha, and no additional downloads are required. The game is easy to play with low capacity, making it an excellent choice for players who like to play steadily in their spare time.

Note that currently, only Japanese is supported. However, the developers plan to consider translation support in order from the country with the most reviews. Overall, RPG Valkyrie Dungeon is a cute and easy RPG game that is worth trying out for players who want to play quickly without stress.