Dandy Dungeon - Legend of Brave Yamada is an RPG game developed by Onion Games. It is available on Nintendo Switch and comes in a full version license. The game is categorized as an action game.

The game presents the story of Yamada-kun, a 36-year-old programmer who hates his job and creates an RPG game of his own. He falls in love with his neighbor Maria-chan and adds Princess Maria to his game. The game is designed to find out if Yamada-kun and Maria-chan will find love.

To clear a floor of a dungeon, players must use their mouse or a controller to draw a path and guide the hero from the entrance to the exit. Players must also use healing items and attack or defense spells with proper timing to keep the hero alive and fighting. Each 5x5 floor is filled with treasures, traps, monsters, items, secrets, and surprises.

The game also features a new worldwide leaderboard to determine the best Yamada-kun in all parallel universes. The unique mix of chiptunes and humming by Keiichi Sugiyama complements Yamada's retro-themed world perfectly.

Overall, Dandy Dungeon - Legend of Brave Yamada is a unique RPG game that combines love, adventure, and retro-style design.