Agent17 (18+ Adult Game)

Agent17 casts you as an unremarkable high-school student whose fortunes reverse the moment you find a broken phone. The device connects you to Agent17, an enigmatic figure willing to execute your commands without question. What begins as petty revenge against bullies spirals into something far more complicated—a story that hinges on the moral choices you make and the secrets you uncover about the people around you.

HEXATAIL has built this on a deliberately large scale. You'll navigate over 100 explorable maps across a persistent school environment, interact with more than 30 characters (each with their own narrative threads), and tackle 500+ quests that range from mundane to morally fraught. The structure leans toward free-roaming adventure rather than linear kinetic storytelling; thirty minigames are woven in to break up pacing. Animated sex scenes are present and tied to relationship progression, though the game's real tension comes from the darker themes—coercion, assault, and drug-related crime feature prominently. The narrative explicitly flags avoidable NTR content, giving you some control over which paths you pursue.

At version 0.26.10, HEXATAIL estimates roughly 6 hours of playable content so far, and the project remains in active development. The game runs on Windows, macOS, Linux, and Android, with official translations into eight languages (English, Korean, Vietnamese, Simplified and Traditional Chinese, Thai, Indonesian, Arabic, and French) plus machine-translated support for Japanese, German, Spanish, and Portuguese. If you're expecting a tightly scripted visual novel, this isn't it—Agent17 is explicitly a sandbox with consequence-weighted branching, so your choices genuinely reshape both the story and your relationships.