In 'Whose Diary Is It Anyway?', players assume the role of Riley, a sharp-witted detective with a penchant for trouble. After stumbling upon a mysterious diary at a quirky flea market, Riley discovers it belongs to an elusive time traveler. Each entry reveals hints about past and future events, leading Riley to engage in a thrilling scavenger hunt across various time periods. The player's choices determine which timelines to explore, the characters to meet, and the secrets to uncover. Each decision has dynamic consequences, making every playthrough unique as players piece together the truth behind the diary's original owner.