Screenshots
Watch trailer on Steam ↗A Promise Best Left Unkept
Hangover Cat Purrroduction · Published by Hangover Cat Purrroduction · Official site ↗
Content notice: The game contains explicit depictions of sexual acts, blood, and nudity. Here are some of the themes that you will encounter in the game: - Lots of sexual content - Cheating (NTR) - Alcohol use - Nudity - Oral, vaginal, and anal sex - Sexual innuendo - Crude language All characters depicted are over the age of 18.
Very Positive — 86% positive (140 reviews) · 12 achievements
Last updated 27 Sept 2026
Play as Harry in a hard NTR visual novel where your former college bully reenters your life, working with you and your girlfriend, scheming behind your back to steal or blackmail her. With over 400,000 words, 60 sex scenes (most animated), and 8+ endings, your choices shape the way you get betrayed
£20.99
Lowest price we've ever recorded
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Price history
Adventure · 2023 · More £15 - £30 games
Explore the complex web of relationships and choices in "A Promise Best Left Unkept," where your decisions shape a tale of love, lust, and deceit. Dive into an expansive visual novel with over 400,000 words and multiple endings.
About this game
Prompted into action by the promise he made to his girlfriend a year ago, Harry finally made a huge breakthrough in his quest for success by scoring a major deal for his company, in doing so setting into motion his inevitable promotion. But what he didn’t foresee is that the byproduct of his unshakable resolve would unintentionally invite an undesirable presence into his life. The representative of the subcontracting company—his old bully from high school.
400k+ Words
Multiple Perspectives
8+ Endings
140+ CGs
60+ Sex Scenes
Animated Sex Scenes
Harry
Harry is a hard-working, cooperative, and loveable office worker whose prospect has been particularly bright ever since he started going out with Laura, his coworker, and made her a promise that he would aim to match her professional success. He's a hopeless romantic and would do almost anything to help a friend in need.
Laura
While her look definitely defines accurately her personality, Laura has been steadily softening as her relationship with Harry has become a more and more important part of her life. She's strict, but usually fair. Though if you're dead weight, she won't blink an eye before casting you aside.
Aya
As the most useless employee in the office, Aya seems to almost make a point out of it daily. Luckily, she's working under Harry, which gives her a lot of leeway in terms of procrastinating. She's secretly in love with him, and won't hesitate to use her modest bosom to capture him like she would a dungeon in the video games she always plays during work hours!
Luca
Luca is the representative of the subcontracting company that hired Harry's firm in order to develop a mobile app for them. He's very laidback and hardly finds anything interesting. Coincidentally, he's also Harry's childhood bully, although he's weirdly acting as though Harry is now his best buddy.
Sandra
Sandra is Laura's mother. The two of them have been estranged ever since Sandra ran away with another man, leaving Laura behind with her single dad. But that's in the past. At least that's what Sandra is hoping. She's come back in Laura's life and has been actively trying for the past year to build a bridge between them. She's charming, kind-hearted, and still holds a touch of youthfulness.
System Requirements
Will my PC run this? →Minimum
- OS *: Windows XP or higher
- Processor: Core 2 Duo (64 bit processor)
- Memory: 2 GB RAM
- Graphics: 1280 x 720
- DirectX: Version 9.0c
- Storage: 2 GB available space
- Sound Card: Any
Supported Languages
Latest news
AnnouncementsOfficial
He Maid Her Fall, A Mom NTR, Is Now Available On Early Access!
Just wanted to let you know that my next project is now available on Early Access! It is already 180k words long, has more than 50 CGs and 25 scenes!You can now experience Johnny's university life as he gets literally stuck between a rock and a hard place.His mom, Kate, is about to go to work for his bully.But he also finds a new meaning in his life when Lesley takes an interest in him.There's no way anything could go wrong for him… right?Find out more in He Maid Her Fall!Read full article on Community Announcements (Hangover Cat Purrroduction)AnnouncementsOfficial
Some Useless Official Merch Is Now Available!
Merch Store: https://www.etsy.com/shop/HangoverCatHey, guys! Just wanted to let you know that I started a Etsy store with some small, useless trinkets!As advertised, the first 100 customers who buy at least a pin or a keychain will also receive a Kate magnet, free of charge. The reason is not because I'm generous, but because I thought it was a magnet for fridge but realized when receiving it that it's a magnet for clothes and stuff. I made a mistake, it's even more useless than I first anticipated. In any case, it's a 2.5" Acrylic pin magnet of Kate, and it's free, so who cares? Anyway, for now the merch store doesn't have much. It's mainly stickers and keychains.I'm trying to test things out. I've never done this, so it's much easier to sale small trinkets. But the goal obviously is to have merch for every character and have all kinds of cool stuff like prints, dakimakura, plushies and mousepad. So we'll see how it goes.The store is on Etsy, so if you're interested, please check it out: https://www.etsy.com/shop/HangoverCatRead full article on Community Announcements (Hangover Cat Purrroduction)AnnouncementsOfficial
My new game, His Bet, Her Loss, released TODAY!
Hey, just want to let you guys know that my new game, His Bet, Her Loss is releasing today!It's a short NTR story about Karl, the boyfriend, who makes a bet with his rival about whether his girlfriend Heather would cheat on him in the span of a 5-day trip. It features both Heather's and Karl's perspective, voice acting for Heather, and animated sex scenes!Will she cheat on Karl? Or will she be a loyal girlfriend? There's only one way to find out!Grab His Bet, Her Loss on Steam while it's 15% off! I'm sure you won't regret it... Well, at least, not as much as Karl did.Read full article on Community Announcements (Hangover Cat Purrroduction)AnnouncementsOfficial
A Promise Best Left Unkept – Aya Edition has just now fully released on Steam!
A Promise Best Left Unkept – Aya Edition, a standalone, alternative version of A Promise Best Left Unkept has now been fully released on Steam after 2 years of development. Follow Harry and Aya as they try to fight for their love in this new story filled with heartwarming moments… but also extreme betrayal.Featured content:450000+ words125+ CG sets50+ Sex scenes3 endingsAnimated sex scenes!SynopsisPrompted into action by the promise he made to his girlfriend a year ago, Harry finally made a huge breakthrough in his quest for success by scoring a major deal for his company, in doing so setting into motion his inevitable promotion. But what he didn’t foresee is that the byproduct of his unshakable resolve would unintentionally invite an undesirable presence into his life. The representative of the subcontracting company—his old bully from high school.If you're interested in your cute girlfriend trying her best for your love, with lots and lots of cheating... I mean, romantic sex, please check it out!!Read full article on Community Announcements (Hangover Cat Purrroduction)Patch NotesOfficial
The Bonus Scene - Season 2 DLC is now available in Simplified/Tradition Chinese!
It has taken me a bit more time than expected. I have a lot on my plate, but the second season of the DLC is now available in Simplified and Traditional Chinese!Thanks for the support!Aya Edition should release later next month! I hope to see you there!Read full article on Community Announcements (HSelf)
