In 'Whose Phone is This, Anyway?', you find yourself at an upscale party in an extravagant penthouse after your friend mysteriously disappears. Midway through the night, chaos ensues when a stranger's phone is mistakenly switched with your own. As you unravel the web of secrets hidden within the phone's messages, photos, and apps, you begin to uncover a conspiracy that ties back to your friend's disappearance. Navigate a cast of eccentric partygoers, solve intriguing puzzles embedded in a chaotic night, and make choices that will lead you down various paths—some thrilling, others dangerous.