Zero Sum

Zero Sum is an adult visual novel with thriller elements set in a corporate world of moral compromise. You play as an ordinary testing department manager who is unexpectedly promoted to lead "Project Icarus"—tasked with finalizing and launching the "Phoenix" algorithm, a system that analyzes user behavior to dynamically raise taxi prices during moments of vulnerability. As the algorithm learns more about customers, profits increase, but you begin to realize your promotion was no accident: it's an invitation into a world where morality and profit fundamentally conflict. The narrative centers on escalating moral dilemmas and hidden threats. Someone knows too much about the project and is watching your every move, waiting for a mistake. You must navigate a web of secrets and consequences, choosing between surrendering to greed and power, exposing the truth at great personal cost, or forging a third path where survival means compromising your principles. The game features high-quality adult scenes that serve the narrative rather than exist as mere content, a cast of complex characters with their own hidden agendas, and a realistic world stripped of idealism.