In 'Whose Phone Is This, Anyway?', players take on the role of a quirky private investigator named Riley, who has stumbled upon a mysterious phone left behind at a chaotic party. As they delve into the phone's apps, messages, and photos, players must navigate a web of friendships, lies, and bizarre social media posts to uncover the true owner of the device. The choices made throughout the game alter relationships and lead to surprising twists, as players must dodge quirky party-goers, misunderstandings, and the relentless progression of a countdown timer that will result in the phone being erased at midnight.