In 'Whose Diary Is It Anyway?', players assume the role of Alex, a quirky amateur detective who stumbles upon a mysterious diary at a chaotic street fair. The diary belongs to a stranger whose secrets could alter the course of local events. As Alex, players must navigate through an intricate web of colorful characters including a fortune-telling vendor, a rogue street magician, and a secret society of diary enthusiasts—all while solving puzzles, uncovering secrets, and engaging in dialogue that shifts the course of the story. Each choice leads to unexpected outcomes, and the game's nonlinear narrative encourages players to replay and explore different paths.