Ylli Fazliu · Software developer · Game developer

I build software with AI at its core, from creative tools to games.

Right now that's Renea, with AI for voice narration, training simulations and music generation, and plugins that bring it into Unreal Engine, with Unity and Godot versions on the way. On the game side, we're making The WhipGod at Renea Games.

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Current work

Renea

The home for the AI products I build. It started as tooling for The WhipGod, an upcoming game that's been in development at Renea Games. Voice Studio and MusicGen are live, and companies can now try Simulations with a scenario built around their own training.

renea.ai ↗
Renea Voice Studio: a sample passage with narrator and mastering preset picked, raw and mastered audio side by side

Voice · Live

Renea Voice Studio

Narration you direct line by line. Upload a book or a game script and it works out who's speaking, so each character gets their own voice. Premium voices laugh, sigh and react where you mark it. Export Audible-ready MP3s, a chaptered M4B or WAV, and add a facial animation track (52 ARKit channels at 30 fps) with subtitles timed to every word, ready for any 3D avatar.

I built the product end to end: the Next.js studio, the Python API and job pipeline behind it and the public /v1 developer API. The voice and animation models run on cloud GPUs, tuned so even a full novel renders quickly.

  • Python
  • FastAPI
  • PyTorch
  • Next.js
  • TypeScript
  • Docker
  • Cloud GPUs
  • Postgres (Neon)
  • SQLAlchemy
  • Linux
  • Cloudflare R2
  • AWS
Renea Simulations: a live de-escalation scenario outside a pharmacy with an objectives checklist

Simulations · Early access

Renea Simulations

Workplace training you practise instead of watch. Trainees walk into an Unreal Engine scene in their browser, talk out loud to AI characters and get scored on how they handled it, with every point linked to the moment that earned it. The 3D scene runs on our servers and streams to the browser like a video, so there's nothing to install.

The characters' language and voice models run on cloud GPUs, tuned to answer fast enough that a spoken conversation feels natural.

  • Unreal Engine 5
  • Python
  • AWS GameLift
  • Cloud GPUs
  • LLM characters
  • Voice AI
  • Postgres (Neon)
  • SQLAlchemy
  • Linux
  • Cloudflare R2
Renea MusicGen: a cinematic orchestral song laid out by section and instrument on a timeline

Music generation · Live

Renea MusicGen

Original music you shape section by section. Pick a genre, a mood and what it's for, like a boss battle or a village loop, and it lays the song out on a timeline. Change one part and only the bars around it get rewritten, or lock the melody and redo the drums. Export stems and MIDI, or loops, intensity levels and transitions for a game. Works in the browser or inside Unreal.

The music models run on cloud GPUs, tuned so you can write several versions at once and hear changes without a long wait.

  • Python
  • LLM music generation
  • Audio synthesis
  • MIDI
  • Cloud GPUs
  • Postgres (Neon)
  • SQLAlchemy
  • Linux
  • Cloudflare R2
  • AWS

Game engine plugins

Editor tools for the FAB marketplace. Each one works on its own, and they connect when you have both.

Renea Studio panel open in the Unreal Editor, with AI Narration and Music Generation side by side

Unreal plugin · On FAB

Renea Studio for Unreal

One editor panel for AI narration, music generation and adaptive music. Write a line or a whole batch from a DataTable, see the credit cost, generate, and it lands in the Content Browser as a Sound Wave. Unity and Godot versions are on the way.

  • C++
  • Python
  • Custom MCPs
  • UE 5.8
  • REST
The Adaptive Music System editor inside Renea Studio in Unreal, with a song's tempo, layers and states

Unreal plugin · Paid

Adaptive Music System

Game music that changes exactly on the beat, with states, layers, intensity, music zones and stingers. The whole plugin is written in C++ for the ultimate performance, and its functions are exposed to Blueprints so designers can use it without code. No middleware. It's sold on its own, and plugs straight into Renea Studio if you have both, for a seamless workflow.

  • C++
  • Python
  • Blueprints
  • UE 5.4+

Games & tools

REToolKit Studio: the start screen for a new investigation, with analysis policies, a tools sidebar and a Claude panel

Tool · Private

REToolKit

Reverse engineering has always fascinated me, because every program is open source to someone who knows how to read it. REToolKit started as my way of learning assembly and how programs work at the lowest level, and it grew into a tool that automates as much of the work as I could. The automation is built in and runs fully offline, no extra tools needed.

Drop in one or more programs and it identifies each file and picks the analysis steps the evidence calls for, from unpacking to .NET recovery to virtualised code. It runs suspicious code in an emulator inside a closed sandbox to see what it actually does without risking your machine, and that's just one of many steps it handles on its own. The result is a report where every finding is backed by evidence, with verdicts that match what industry-standard antivirus software reports. 54 tools, all in one app.

When you want to go past the verdict, Claude takes over. REToolKit hands it the full investigation as context, so it works through the binary like an analyst who's already been briefed. It drives IDA Pro, REA and Frida through their MCP servers, gathers what each one finds into a single context, follows up wherever it can and explains it all in plain English.

I planned to release it as open source, but it's become powerful enough that I decided to keep it private.

  • Reverse engineering
  • Claude Code
  • Custom MCPs
  • IDA Pro
  • REA
  • Frida
  • Python
  • Qt
  • C++
  • QML
  • CMake

Game · Renea Games · Coming soon

The WhipGod

A dark supernatural Western action-adventure. Your main tool is a cursed whip: you fight with it and you swing across gaps with it. Its powers are strong, but the curse makes you pay for every use.

It's in vertical-slice production now. Core combat and the traversal loop are in, and the newest piece is a rope system that the whip and swinging are built on.

  • Game design
  • Gameplay programming
  • Physics
  • Unreal Engine 5
  • C++
  • Maya
  • Blender
  • Substance Painter
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About

Portrait of Ylli Fazliu

I wrote my first code at 15 and was hooked the moment the computer did exactly what I told it to. Visual Basic tutorials were hard to come by, so I switched to HTML and CSS, where I could change something and see the result straight away.

I spent my early years building websites and web apps, some for clients and a lot of them just to see how things like Twitter or Twitch work under the hood. These days I'm mostly in C++, Python and TypeScript, splitting my time between Unreal Engine, AI that creates voices and music, and the game.

That mix is how Renea started. Our upcoming game, The WhipGod, needed voices and music, so I built the tools to make them, and those tools grew into products other creators can use in their browser or right inside their game engine.

AI & backend

  • Python
  • FastAPI
  • PyTorch
  • Claude / LLMs
  • Custom MCPs
  • SQLAlchemy
  • Postgres (Neon)
  • Docker
  • Linux
  • Cloud GPUs
  • AWS
  • AWS GameLift
  • Cloudflare R2

Web & tools

  • TypeScript
  • React
  • Next.js
  • Node.js
  • Qt / QML
  • CMake
  • Claude Code
  • IDA Pro
  • REA
  • Frida
  • Figma

Games & engine

  • C++
  • Python
  • Unreal Engine 5
  • Blueprints
  • Maya
  • Blender
  • Substance Painter
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Archive

Older web projects, mostly from 2021–22. They're where I learned most of what I know about the web.

Project Built with Links
Twitter clone Next.js, MongoDB
Business site for a Swiss client TypeScript, Figma, Photoshop
Twitch clone with live streaming React, Node, Nginx, Stripe
Twitter clone React, Express, MongoDB
Social media app React, Immer
Tesla CyberTrunk GSAP, Blender
Maze game JavaScript, Matter.js
Todo list React, TypeScript
iPhone product page GSAP, Blender
Trello clone JavaScript
Beat maker JavaScript
Pick & Lock colour picker JavaScript
Movie comparison JavaScript, OMDb API
Animated e-commerce store GSAP, Barba.js
Photon photo gallery JavaScript, Pexels API
Animated website GSAP, Barba.js
Animated hero page GSAP
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Contact

Let's stay in touch.

Working on something with AI, games or Unreal? I'm happy to talk. The fastest way to reach me is LinkedIn.