In 'Hello? Who Dis?', players step into the shoes of a witty detective in a bustling city, where every phone call could be the key to solving a high-stakes case. After receiving an anonymous message hinting at a conspiracy involving a powerful tech conglomerate, you must navigate an interactive web of conversations, manipulating contacts, interviewing suspects, and deciphering clues hidden in text messages. The game features branching dialogue paths and moral choices that impact the outcome, leading to multiple possible endings based on your detective skills and social prowess.