Mechanical Heart Tattoo - Glow / No-glow, 4 Colors (4K transparent PNG, VRChat, lilToon, PC)

A tattoo (skin decal) of a "mechanical heart" built from gears, pistons and pipes. The heart is a single piece at the center; the gears and pipes are decoration around it. The heart is the star.

The intended place is the center of the chest (where a heart would be). It can also go on the upper arm, the back or the thigh.

What is included

• 4096x4096 transparent PNGs (8): 4 colors (cyan, magenta, amber, violet) x 2 line colors (black lines for light skin / white lines for dark skin or black clothes)
• lilToon material presets (16) in a "glow" and a "no-glow" version. The glow version lights the heart, the round parts and part of the pipes
• 1 glow mask, a Read Me (Japanese / English), terms of use and a changelog

Features

• One piece that makes the heart the main subject. It is not a gear sprite sheet
• 4096 resolution. Thin lines hold up at about 11 cm wide on an upper arm (checked by us)
• The glow version stands out in dark worlds (it looks pale in bright worlds)
• No meshes, bones, particles or PhysBones; textures only (one image about 21 MB, glow version about 27 MB; lowering Max Size to 2048 makes it about 5 MB each)
• Setup: import the unitypackage and put the image into "Main Color 2nd" of your avatar's skin material (lilToon). A step-by-step guide is included

Requirements

• VRChat (PC only), lilToon 2.3 or later, Unity 2022.3 series. Checked versions: Unity 2022.3.22f1 / VRChat SDK Avatars 3.10.4 / lilToon 2.3.4
• Not for Quest / Android

Notes (honest)

• We only tested the upper arm of our mascot (VRoid, wearing clothes). We have not checked the chest, the back or other avatars. It is not "for all avatars"
• A decal is a picture on the avatar's UV. UV layouts differ between avatars, so adjust position / size / angle yourself. The picture may be cut at UV seams
• The artwork was made from source images generated with AI (image generation), enlarged to 4096 and refined by us
• The glow is additive emission; it looks pale in bright worlds
• Only one tattoo can be applied to the same material at a time (it uses the 2nd layer). If placed very small (5 cm or less) the thin lines blur together
• The avatar in the product images is not included

Made something with it? Post it with #ys_room - we would love to see it.

Changelog

2026-11-07: First release