One day, you happened to open this webpage — and a cute girl jumped right into your computer. She's been living there ever since,.

She loves sitting on the taskbar swinging her legs, or leaning over the edge of a window to sneak peeks at your work. When you're busy, she'll quietly keep you company, occasionally tilting her head and staring curiously at your cursor. But the moment music starts playing, she perks right up and starts swaying to the beat.

When there's nothing to do, she wanders around your desktop just to catch your eye. Drag her off-screen if she's in the way — but the moment your mouse gets close, she'll pop back out and make a face at you.

And at some point, without even realizing it, the first thing you do every time you turn on your computer is look for where she's hiding today.

[About MMDEngine]

MMDEngine is a lightweight desktop pet app that brings your favorite virtual characters to life on your Windows desktop. She can perch naturally on windows and the taskbar, dance along to whatever music is playing, tuck herself away at the edge of the screen while you work, and pop right back out when your mouse comes near — always there, never in the way. Import MMD (PMX)/VRM directly, and converted FBX models, and use the powerful character editor and high-performance toon rendering engine to create a desktop companion that's uniquely yours.

【Features】

🪑 A character that truly sits on your desktop

She can naturally sit on the taskbar, window edges, and every corner of your screen, with a rich set of idle animations and adorable sitting poses — no more static figure floating in the middle of your display. All animations support customization and Steam Workshop.

🎵 When the music plays, the dancing starts

Whether it's local music, online videos, or in-game BGM, she detects it in real time and dances along — turning your desktop into your own personal live stage. All dance moves support customization and Steam Workshop.

🙈 Out of your way, there when you need her

Drag her to the left or right edge of the screen to hide her; move your mouse near that edge and she'll instantly peek out to see you. Your work stays uninterrupted — and her company never goes missing.

🎨 Import all kinds of character models

Easily bring in the characters you love, with direct import support for:

MMD PMX models

VRM models

Unity-converted FBX models

Full Steam Workshop support means downloading and sharing characters is just one click away.

👗 A more powerful character editor

Build a character that's entirely your own, with support for:

Unlimited outfit slots and full customization of every part

Visual physics editing

Fine-tuning of model details

Quick saving and switching between character presets

Whether you're creating or tweaking, it's easy to pick up.

✨ Beautiful anime-style rendering

Our in-house ultra-lightweight toon rendering engine keeps resource usage minimal without compromising visual quality. Supports:

Anime-style toon rendering

Realistic anime-style rendering

Show / hide any body part

Customizable glow effects

Switch styles freely — make her look one of a kind.

🚶 A desktop that's never lifeless

She strolls freely around your desktop, randomly pulling off all kinds of cute and silly little moves — every time you boot up your PC, there's a new surprise waiting. Walking animations also support Steam Workshop, so the community keeps the fresh moves coming.

🌏 Endlessly expand her world

Every single animation is customizable — idle, sitting, walking, dancing, all freely replaceable. Combine that with Steam Workshop downloads and sharing, and her possibilities are nearly limitless.