
Android & PC · official F95zone thread · free account shows the links
Screenshots
About Zero Sum
Zero Sum, developed by Only One, plunges players into the high-stakes world of corporate ethics and personal compromise. As an ordinary testing department manager, the male protagonist is unexpectedly thrust into a leadership role for Project Icarus. His critical task: finalize and launch the "Phoenix" algorithm, a sophisticated system designed to analyze user behavior and dynamically increase taxi prices during moments of vulnerability. The core premise of Zero Sum quickly becomes apparent: the more the "Phoenix" algorithm learns about customers, the greater the financial profit it generates for the company.
This promotion, however, is far from a simple career advancement. The protagonist soon discovers it’s a direct ticket into a morally ambiguous world where profit consistently outweighs ethical considerations. Every decision made within Zero Sum carries significant weight, not only shaping the fate of Project Icarus but also irrevocably altering the protagonist's own trajectory. Rendered with detailed 3DCG animated visuals, the game presents these complex choices from a first-person perspective, drawing players directly into the unfolding corporate drama and its intimate consequences.
The narrative of Zero Sum isn't just about corporate machinations; it’s laced with a palpable sense of surveillance and impending revelation. The truth behind the "Phoenix" algorithm and the protagonist's role doesn't remain hidden for long. Someone is already aware of the project's darker implications, watching every move, waiting for a critical misstep. When that inevitable mistake occurs, the game makes it clear: there will be no turning back, amplifying the tension and the personal stakes for the protagonist.
Gameplay and Features
Zero Sum delivers an interactive experience centered on player choice and narrative progression, presented through a male protagonist's point-of-view. Players navigate a corporate environment filled with ethical dilemmas, where decisions directly influence the development of the "Phoenix" algorithm and the protagonist's personal life. The game incorporates elements of humor alongside its more serious themes, ensuring a varied tone. Extensive romance options are a core component, allowing for diverse intimate relationships.
- Detailed 3DCG animated visuals provide a rich aesthetic experience.
- Engage with a story-driven experience from a male protagonist's first-person perspective (PoV).
- Influence the narrative through decisions impacting the "Phoenix" algorithm and personal relationships.
- Explore a wide range of explicit romance content, including anal romance, creampie, futa/trans encounters, group romance, handjob, multiple penetration, oral romance, and vaginal romance.
- Experience narrative moments infused with humor.
- Available across multiple operating systems: Windows, Linux, Mac, and Android, catering to both desktop and mobile players.
- Full localization support in English, Spanish, and Russian.
Story and Setting
The story of Zero Sum unfolds within a modern corporate setting, focusing on the development and launch of the "Phoenix" algorithm. Players assume the role of an ordinary testing department manager whose life takes an unexpected turn with a promotion to lead Project Icarus. This project’s goal is to perfect the "Phoenix" algorithm, a system designed to exploit user vulnerabilities for financial gain by dynamically adjusting taxi prices. This premise immediately establishes a conflict between morality and profit, which forms the backbone of the narrative.
As the protagonist delves deeper into Project Icarus, the true nature of his promotion—and the algorithm—becomes disturbingly clear. The game meticulously builds a world where every corporate decision has ethical ramifications, pushing the protagonist to confront his own moral compass. Adding a layer of suspense, the narrative reveals that the project's secrets are not entirely hidden. An unknown entity is actively monitoring the protagonist and Project Icarus, waiting for a mistake that promises irreversible consequences. This constant threat elevates the stakes, turning a corporate drama into a tense thriller where personal integrity and survival are on the line.
What Makes Zero Sum Worth Playing
Zero Sum stands out for its compelling blend of corporate intrigue, ethical dilemmas, and extensive adult content. The game offers a mature narrative that explores the dark side of technological advancement and corporate greed through the lens of a male protagonist facing profound moral choices. The "Phoenix" algorithm presents a unique, thought-provoking central conflict, forcing players to consider the real-world implications of data exploitation. For players seeking a game that doesn't shy away from explicit romance, Zero Sum delivers a broad spectrum of encounters, including futa/trans, group, and multiple penetration scenarios, all rendered with 3DCG animation. The inclusion of humor provides a welcome contrast to the more serious themes, while its multi-platform availability across Windows, Linux, Mac, and Android ensures accessibility for a wide audience. The constant threat of exposure and the irreversible consequences of decisions create a high-stakes experience that keeps players engaged.
Tips for New Players
- Carefully consider the ethical implications of your choices regarding the "Phoenix" algorithm; your decisions directly impact the game's narrative and outcomes.
- Explore the various relationship paths and romance options available. The game offers a wide range of intimate encounters, including futa/trans and group dynamics, which contribute significantly to the overall experience.
- Be mindful of the game's underlying tension. As the story progresses, "someone is watching," and mistakes can lead to irreversible consequences, so proceed with caution in key decision points.
Additional Information
What's New
Updated April 21, 2026. Current version: v1.0 (EP.1). Full changelog on the official F95zone thread.
Tags
The download button opens the game's official F95zone thread, where the developer publishes the download links.
Platforms: Windows, Linux, Mac, Android
APK RAW does not host game files. Download only from the developer's links and scan archives and APKs before installing.
Frequently Asked Questions
How to download Zero Sum?▾
Click the download button on this page — it opens the official F95zone thread of Zero Sum, where the developer's download links for Windows, Linux, Mac, Android are listed (a free F95zone account shows the links).
Is Zero Sum free?▾
Yes, Zero Sum is free to download. No payment and no subscription are required. The latest version listed here is v1.0 (EP.1).
Which platforms does Zero Sum run on?▾
Zero Sum is available for Windows, Linux, Mac, Android. On PC, extract the archive and run the game executable. The Android version requires Android 5.0 or higher.
Is Zero Sum safe to install?▾
Download Zero Sum only from the developer's links in the official F95zone thread, and scan archives before running them. The game by Only One - Twitter is rated 4.0/5.
Where can I find more Visual Novel games like Zero Sum?▾
Browse the Visual Novel category on APK RAW for more games similar to Zero Sum. New adult games for PC and Android are added several times a day.
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