Castlevania - Portrait of Ruin, known in Japan as Akumajō Dracula: Gallery of Labyrinth (悪魔城ドラキュラギャラリー・オブ・ラビリンス), is a 2006 action-adventure platforming game developed and published by Konami for the Nintendo DS. It is the sequel to Castlevania: Dawn of Sorrow and the second Castlevania title to be released on the DS. The game follows two main characters, Jonathan Morris and Charlotte Aulin, as they explore the castle of Count Dracula in search of a mysterious painting. The game is presented in the same style as its predecessor, with a top-down perspective and the ability to switch between the two characters to solve puzzles and progress through the game. Combat is also similar to the previous game, with the player able to use magic and special attacks to defeat enemies. Portrait of Ruin also introduces a new “dual-character” system, where the player can switch between the two characters to use their abilities to solve puzzles and progress through the game. The game also features a new “Reverse Castle” mode, where the player can explore an alternate version of the castle. In this mode, the player must defeat powerful bosses to progress. The game also features a local multiplayer mode, where two players can explore the castle together. Overall, Castlevania - Portrait of Ruin is a great addition to the Castlevania series. With its engaging story, intense combat, and unique dual-character system, the game offers an exciting and challenging adventure for fans of the series.