My Best Friend's Sister

My Best Friend's Sister

Naughty Sister · January 9, 2026 · Sexual Content, Nudity, Dating Sim, Visual Novel, Casual

Buy My Best Friend's Sister from Steam at $12.99 — the cheapest of 1 store we compare.

PC
Mixed68% · 4231playing now
Best price
$12.99
lowest tracked $5.19
Steam Buy at Steam

Prices last checked

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Where to buy My Best Friend's Sister — official stores

Steam
Steam
Standard Edition · Steam
$12.99
Buy

My Best Friend's Sister price by region

My Best Friend's Sister costs $5.99 in Georgia (USD), £10.99 in the United Kingdom, €12.79 in Europe (EUR), $12.99 in the United States, CA$16.99 in Canada, A$18.95 in Australia, NZ$18.99 in New Zealand, R$41.99 in Brazil and zł59.99 in Poland right now.

Cheapest My Best Friend's Sister offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
Georgia (USD) $5.99 $5.99 — 1
United Kingdom £10.99 £10.99 — 1
Europe (EUR) €12.79 €12.79 — 1
United Statesyour region $12.99 $12.99 — 1
Canada CA$16.99 CA$16.99 — 1
Australia A$18.95 A$18.95 — 1
New Zealand NZ$18.99 NZ$18.99 — 1
Brazil R$41.99 R$41.99 — 1
Poland zł59.99 zł59.99 — 1

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About My Best Friend's Sister

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!

My Best Friend's Sister — game info

Platforms
Windows, macOS, Linux / SteamOS
Steam Deck
Playable
Player modes
Single-player
Controller
Full controller support
PC Game Pass
Not included

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

Players praise this visual novel as a relaxing, well-written experience with creative content that delivers both humor and engaging storytelling. The game is consistently described as enjoyable and worth playing, though reviews suggest it features adult content and an unconventional narrative that may involve bittersweet character relationships.

Recommended Oct 3, 2026
Bought it on sale. Finished it. No regrets. Several questions, though.
Recommended Oct 3, 2026
The protagonist makes terrible decisions. Thankfully, I was there to make them for him.
Recommended Oct 3, 2026
The plot is held together by romance, chaos and suspiciously convenient circumstances.
Recommended Oct 3, 2026
Would play again. Probably shouldn’t. Definitely will.
Recommended Oct 3, 2026
My expectations were questionable. The game somehow made them worse.
Recommended Oct 3, 2026
I'm amazed!!!! This game is definitely one of the best 18+ category games that I've visited, it has very elaborate sex scenes down to the smallest detail, it looks very cool!!! The character dialogues are also of very high quality

Community reviews

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