Door of Memory is a puzzle adventure game where players take on the role of a character trapped in a mysterious and challenging world. The player's task is to explore the doors in the game, each door leads to a different world or level, containing puzzles and challenges that need to be solved to progress further in the journey. The plot of Door of Memory often revolves around finding lost memories or discovering hidden secrets in the main character's past. The story is gradually revealed through each level and through in-game hints.