Castle of Burn is a free Android game developed by DD Dream that combines hunting action with adventure elements. The game revolves around the story of three sisters from Ellyn Village, with the oldest sister, Rena, holding a secret power that burns the kingdom with eternal flame. Rena leaves the kingdom, still holding the untold secret, leaving her two sisters, Blue and Elsa, to lift the curse of the eternal flame and find Rena.

The game's features include a neat UI with lovely images and flashy effects, an easy and simple combat system, two characters, Blue and Elsa, with their unique abilities, 11 items of various weapons and armors, other various items such as rings, potions, and magic scrolls. The game also has an unknown dungeon that allows players to enter nine types of dungeons using mystery stones, various quests to help players reach level 99, and a glamorous and powerful transformation system with three levels different for each character. Additionally, the game has 60 species of monsters in various patterns and ten dreadful bosses, with support for Google Play Service ranking.