VN Ren'Py Atlas Bay: Babylon [Development Thread]

[h4x.x]

Hey everyone! h4xx here, new to AVN game dev and excited to share my first project: Atlas Bay: Babylon.

I’m aiming for an immersive experience with a mix of erotica, intrigue, and a world full of unique characters and hidden agendas. Right now, it’s being built in RenPy with AI tools for sounds, music, images, and animations.

This post is just a quick intro. More details and some early CGs will be coming soon. Stay tuned!

# About Atlas Bay: Babylon

Atlas Bay: Babylon is a modern adult visual novel set in the heart of Atlas Bay, a city of luxury, secrets, and temptation. You play as Leo, a young multi-millionaire who made his fortune through early investments in Bitcoin and high-stakes financial ventures. Moving into the exclusive Babylon building, Leo finds himself surrounded by the city's elite and drawn into a world of glamorous neighbors, high-profile parties, and mysterious intrigues. Beneath the surface, a powerful criminal organization operates in the shadows, and every step shapes your relationships and your fate in a world where desire and danger go hand in hand.


# Features

• Type of game: Story focused game, with casual branching.
• Tags: [2DCG, AI CG, Male Protagonist, Bdsm, Cheating, Drugs, Exhibitionism, Female domination, Handjob, Lesbian, Oral Sex, Teasing, Vaginal sex, Voyeurism, Humor, PoV]
• Planned future tags: [Animated, Masturbation, Interracial, Anal Sex, Prostitution, Sex Toys, Stripping, Group Sex, Graphic violence]
• Platforms: PC/Linux, Mac, Android (after 0.1.0), iOS (via Spark after 0.1.0)

# Status

• Last development thread update: 09/01/2025
• Current version: 0.0.1 (Dev)
• Status: In early development
• Custom AI LoRAs: 3
• Custom AI Finetunes/Models: 0

## [Current Chapter Stats] Chapter 1: This is Babylon

• Script: 30%
• Coding: 5%
• CGs: 50/?
• Animations: 0/?

# Characters

• Leo (MC): Ambitious young multi-millionaire seeking excitement and genuine connections in the mysterious world of Babylon.
• Doña Dolores: Wealthy businesswoman and property owner, not a resident but owns Leo's apartment, known for her colorful past and sharp wit.
• Valerie Summers: Warm, friendly neighbor on the 19st floor, known for her kindness and perceptiveness, balancing independence with a caring but distant marriage.
• Nathan Summers: Valerie's reserved and hardworking husband, often away for his career, whose quiet nature and emotional distance add complexity to their marriage.
• Mateo Fernandez: Powerful billionaire, owns the penthouse on the 21st floor, famous for his wild parties and strong influence.
• Olivia Fernandez: Former model, married to Mateo, lives in the penthouse on the 21st floor, admired for her beauty and grace.
• Helen Marquez: Mateo's personal assistant, lives in Babylon paid by Mateo, keeps a close eye on the building's happenings.
• Ramon Gutierrez: Jovial concierge, works at the Entrance (0th floor), always ready with a joke and helpful advice.
• Javier Torres: Reliable valet, works on the Parking Floor (-1), trusted by residents, knows the city well.
• Sabrina Jackson: Pop star, lives in Apartment A on the 14th floor, famous for her looks and carefree attitude.
• Lina Müller: Adventurous traveler, shares Apartment A on the 13th floor with best friend Amara.
• Amara Diop: Creative and loyal, inseparable from Lina, lives in Apartment A on the 13th floor, passionate about art and food.
• Marco Rossi: International DJ, lives in Apartment B on the 14th floor, brings energy and nightlife to Babylon.
• Izzy (Isabella Martinez): Bartender and dominatrix, works in Babylon, skilled at keeping secrets and reading people.
• Anya Petrova: Glamorous and funny, lives in Apartment B on the 17th floor, brings a touch of Russian flair to the building.
• Lila Moreau: Sophisticated escort, lives in Apartment A on the 18th floor, known for her intelligence and charm.
• Rafael "Rafe" Silva: Poker champion, lives in Apartment B on the 19th floor, discreet and well-connected among the elite.
• Isabella "Bella" Gray: Influencer and journalist, lives in Apartment A on the 15th floor, determined to uncover the city's secrets.
• Felicity: Leo's efficient assistant, not a resident but always ready to help and keep things organized.
• Lucia Fernandez: Mateo's rebellious 21-year-old daughter, a sharp and independent student who moves between campus life and Babylon's wild nights, drawn to danger and secrets.
  

To be continued...

 

[i_love_ai_hentai]

Good luck, can’t wait to try it.

 

[eevkyi]

Good luck with your project. Are you planning to release an android version?

 

[h4x.x]

Good luck with your project. Are you planning to release an android version?

Hey, yes, it is planned to have an Android version, not for the first public release (Chapter 1) but for the follow-up version.

I will add a section with the expected platforms and features. Thank you.

 

[h4x.x]

Quick update to present our MC (Leo)



Leo (Name can be changed)

A young multi-millionaire who’s just moved into Apartment A on the 16th floor of Babylon, renting the apartment from Doña Dolores. Leo made his fortune early by investing in Bitcoin and diving into high-stakes financial ventures, which opened doors to Atlas Bay’s elite circles. These days, he works as an independent investor and consultant, advising startups and managing a diverse portfolio. Despite his wealth, Leo is searching for excitement, purpose, and real connections in the city. Smart and ambitious, he’s naturally drawn to the mysteries and temptations of Babylon, where every encounter could change his future. As the protagonist, Leo finds himself navigating glamorous parties, complicated relationships, and the hidden dangers that lurk beneath the city’s luxurious surface.

# Development notes
From a development perspective, I created a LoRA for the character to ensure consistency remains above 70% (my acceptance threshold for this AVN). While it works for now, for Chapter 2, I plan to either retrain the LoRA or fine-tune the base model to improve flexibility while maintaining consistency.

 

[h4x.x]

This time two character description... Valerie Summers and her husband Nathan Summers



Valerie Summers

Friendly neighbor, lives in Apartment B on the 16th floor with her husband Nathan, known for her warmth and kindness. Valerie is elegant, approachable, and always ready to help a neighbor in need. She has a talent for making people feel at home and is quick to offer support or a listening ear. Her easy laughter and genuine smile make her popular among residents, but she values her privacy and prefers quiet evenings over wild parties. Despite her gentle nature, Valerie is perceptive and not easily fooled by appearances, making her a trusted confidante for those who earn her respect. Her relationship with Nathan is caring but often distant, as he is frequently away for work, leaving Valerie to manage much of her life independently. She remains loyal and supportive, but sometimes wonders what she truly wants from her future.




Nathan Summers

Valerie's husband, lives in Apartment B on the 16th floor, reserved and private. Nathan is a successful professional whose demanding career keeps him away from home for long stretches. He is quiet, introspective, and prefers to keep his personal life out of the spotlight. While he cares deeply for Valerie, his frequent absences and focus on work have created a sense of distance in their marriage. Nathan values stability and routine, and is more comfortable with quiet evenings than the lively social scene of Babylon. He is loyal and dependable, but sometimes struggles to express his emotions, making him a bit of a mystery even to those closest to him.

# Development notes
These two characters don’t have a trained LoRA, their consistency is achieved through careful prompting and inpainting details.

 

[h4x.x]

I'm not dead! Just a lot of work these past weeks. First things first, I want to redo my style of Dev Logs, the idea is to post weekly updates here on F95 with less detail and more general, small, and random updates via

You must be registered to see the links

. Detailed logs will go on Patron (just an idea.. atm, there is no Patreon).

So without delaying further, here comes:

Development Log #3

Characters
I’ve developed 11 characters with their own images and stories. A last-minute addition was Lucia Fernandez, Mateo’s daughter, to make things more interesting for the future.



To recap: Leo (MC), Nathan and Valerie Summers, Ramón Gutierrez, Mateo, Olivia and Lucia Fernandez, Felicity (remote assistant), Sabrina Jackson (Famous Singer), Izzy (Bartender), and Marco Rossi (Famous DJ). I’ve left around 9 more characters for Chapter 1.


Story
Initially, I wanted a kinetic story without branching paths, but during my latest script brainstorming sessions, I realized there’s potential in adding choices that affect how the MC talks, behaves, and interacts with others. So I’m happy to announce that Atlas Bay: Babylon will have branching paths and decisions that influence character relationships.



Due to these changes, I’ve adjusted the script completion percentage from 50% to around 30%. The good news is that I have the main storylines defined, which will speed up the process.


CGs
I’ve generated a ton of CGs, from 17 in the last update to 50 now. I also plan to split some into more detailed versions. For example, when the MC first enters Babylon, there’s a party going on. Right now, the CG is a general shot of the entrance, but I’m working on more focused versions for each interesting group of people there.



Music
I’m really excited about the music. I’ve been experimenting with different AI music and sound effect generators, and the results are amazing. I’ve almost finished the intro for the game, which will also be a song that Sabrina sings in-game.



I can’t share an example yet, but expect something next week.

Animations
No good news here... I’m still struggling to find a good approach for generating high-quality videos. I’ll push this to almost the end, expecting to include little to no animation in Chapter 1, or at most a couple of non-NSFW ones.


Coding
The game’s source code is underway. There’s some progress on folder structure, scenes, and chapters, but nothing worth mentioning yet. The plan is to start thinking about the GUI once I have most of the script and CGs.


And that’s this week’s update! Thanks for following. If you want more random updates about the game, follow me on

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!