In 'Whose Gem Is This?', players are thrust into the chaotic world of a prestigious gem and jewelry auction house. You play as a fresh-faced intern who stumbles upon a priceless gem rumored to have a dark history. As you navigate through a web of deceit, hidden agendas, and quirky personalities of auctioneers, collectors, and fellow interns, it becomes a race against time to uncover the gem's true owner—or to sell it for yourself! Interact with various characters and piece together clues that reveal hidden motives as you try to avoid being framed for theft or worse—a disastrous public meltdown at the auction. Your decisions shape the narrative, leading to multiple endings based on your alliances and discoveries, keeping players on the edge of their seats.