My Best Friend's Sister
Release date: Jan 9, 2026
Developers: Naughty Sister
Publishers: Naughty Sister
Genres: Adventure, Casual, RPG, Simulation
Categories: Single-player, Steam Achievements, Full controller support, Custom Volume Controls, Mouse Only Option, Playable without Timed Input, Save Anytime, Family Sharing
Supported languages: English, French, Italian, German, Spanish - Spain, Spanish - Latin America, Traditional Chinese, Simplified Chinese, Korean, Dutch, Polish, Portuguese - Brazil, Portuguese - Portugal, Russian, Turkish, Japanese

What happens when a spark ignites where it absolutely shouldn't? My Best Friend's Sister is a sizzling visual novel that pulls you into a whirlwind of temptation, secret desires, and choices that will echo through your life. It all starts with a typical night out—you, your best friend, and his rowdy crew, drowning in drinks and sharing raunchy stories that would make anyone blush. But the real story begins after the last call. Crashing at your friend's place for the night, you come face-to-face with the one person who won't let you sleep: his younger sister. She's sharp, playful, and impossibly alluring . And tonight, her gaze is full of unspoken promises, her words laced with a daring invitation. She's clearly playing a game, and you're her intended target. The Choice is Yours: Give in to Temptation? Engage in her dangerous flirtation and risk a night of passion that could shatter your most important friendship. Take the High Road? Stay loyal to your friend and try to forget this charged encounter, always wondering 'what if...' Every decision you make shapes your relationships, unlocking new scenes, dialogue, and endings. Will you resist? Or will you let desire take control? Key Features: 🔥 A Compelling Story with Spicy Twists Dive into a narrative where every night holds new secrets, and every choice leads to unexpected consequences. A simple sleepover turns into a high-stakes game of seduction and loyalty. 🎨 Stunning, High-Quality Artwork Immerse yourself in a beautifully crafted world. Featuring exquisitely illustrated characters and scenes , every location—from the noisy bar to the intimate bedroom—is rendered with stunning detail to pull you into the story. 💘 Smooth, Animated Intimate Scenes Experience the heat of the moment with fluid and immersive adult animations that bring the passion and intensity of the story to life. 🍻 Guy's Night Out & Raunchy Bar Tales Become one of the guys as you listen to their provocative and uncensored stories of romantic escapades and misadventures. These tales aren't just for laughs—they might even teach you a thing or two. ✨ Meaningful Choice-Driven Gameplay This isn't about simple right or wrong answers. Your seemingly small decisions dynamically alter your relationships and directly lead to multiple endings . Replay to discover every possible outcome! 


Notes: The game contains explicit adult content, including erotic scenes, full nudity, and depictions of sexual acts.