These are low-poly stylized “Hot-Air Balloons” you can use for free.

**Important Details:**
#
* Vehicle have separated parts (basket, burner, cables and envelope);
* Vehicles use 2 materials (colors/liveries and general parts);
* Vehicles models have clean meshes and UV mapped body.

**6 different livery textures:**
![](https://lh3.googleusercontent.com/drive-viewer/AK7aPaDMw_r1eEpocXD1ZIpLH0Rl51WzzklOhVI9ZFRF7wYj7zn9rEA89Iq27FRgOs9wFYKRJPFhLj2CrNw3C9NdMpe-hz4f8A=w1366-h651)

It also include a .unitypackage with additional features:
#
* Livery color customization.
* Custom Shader Graphs.

# **Technical Details**
* **Number of Textures:** 7 Textures.
* **Texture Dimensions:** 256x256, 2048x2048.
* **Polygon Count:** 3,142 Polygons. (Model 1)
* **Polygon Count:** 4,812 Polygons. (Model 2)
* **Polygon Count:** 7,856 Polygons. (Model 3)

UNDERPOLY: Free Hot-Air Balloons

Just some paper & a couple not so good envelopes. 

1 Set 1K PBR Materials (2K Diffuse)

Papers & Envelopes

For full functionality, we recommend downloading the source format.The viewer version is intended only for use in the web viewer. In the source file, the following are fully preserved:✔ native scene structure✔ unsimplified materials✔ proper texture maps✔ original object namesIf you intend to use the asset in a production environment, download the source file.A small pile of early 1900s Stamped Envelopes containing letters or correspondence. Generic enough to be used for business or home scenes. In part based on genuine late 1800s and early 1900s public domain envelope images found in the Library of Congress online collection.

Early 1900s Office Mail Envelope Stack

BTC Polychoron is a data-sculpture generated from Bitcoin market history by embedding the time series into R⁴, computing the 4D convex hull boundary (a polychoron “envelope”), then mapping it into 3D via stereographic projection. 

The result is a single continuous object whose surface encodes extremes/regime structure rather than average behavior: the hull captures the outer geometry of the dataset and turns it into a readable form.

Topology 4D edge (ConvexHull in R⁴):

V = 28,432 (vertex hull 4D)

E = 201,583

F = 346,302 (triangular faces)

C = 173,151 (tetrahedric cells 4D)

χ₄ = V − E + F − C = 0

This model contains 500,000 vertices and 346,302 faces. Vertex color encodes the original data channels: R ≈ 4th-dimension depth (w), G ≈ normalized price, B ≈ time gradient, producing a chromatic field that reveals trajectory and regime shifts while rotating. 

Built procedurally (Python) as a true geometry pipeline, not a texture trick.

Period: 2017-08-17 → 2021-08-20 (UTC)

Price Range: ~$2,919 → ~$64,577

BTC Polychoron - 4D Convex Hull Projection

paper envelope, letters, postcard. Low poly game ready. old paper for letters

Paper envelope

For proper use, we recommend downloading the Original format.The viewer version is intended for web viewing only. In the Original format, the following are fully preserved:✔ native scene structure✔ complete materials without reduction✔ proper texture maps✔ original object namesIf you plan to use this model in production, select the original version.Envelope Open. 3d PBR Model.

Envelope Open

For production-ready use, we recommend downloading the original file.The converted file is intended for web viewing only. In the original file, the following are fully preserved:✔ full scene structure✔ unsimplified materials✔ correct PBR texture maps✔ proper object namingIf you intend to use the asset in a production environment, select the Original format.This is a dark magic sword enveloped by the infernal flames of purgatory the blade is wrapped in dazzling red flames the blade body is engraved with mysterious runes and the hilt is embedded with a magic crystal burning with light.

God Defier

This is a PAPP-generated ceramic medallion built as a manufacturable low bas-relief rather than a standard chakra disc. 
On a 120×240 polar mesh, the script composes a central Divyadvāra sigil from a dodecagram of 4 equilateral triangles, a Vesica Piscis mandorla, 12 zodiacal petal-rays, a double zodiac ring with 12 markers, 24 radial web spokes, halo ripples, and a bindu. 
The border adds a hybrid annular signature: a 24-fold Ripple Crown plus a 12-petal Lotus Garland, while the outer lip is flattened for clean demoulding. Height is computed from weighted domain fields, 12-fold PAPP density, spectral modulation, seam subtraction, radial envelope, center taper, and 8-step terracing, then extruded into a closed body. 
Verified mesh: 57,170 vertices, 114,336 faces, watertight, χ=2.

Generated by PAPP Framework

Divyadvara Tile | PAPP

Metatron#05  is a closed, watertight high-relief disc generated by fusing Metatron’s Cube construction (Fruit of Life: 13 circles + the complete 78-chord network) with a PAPP substrate (S³ sampling → Hopf projection → disc density + spectral modulation). 

The geometry is built as a polar mesh with a 64-spoke cap (120 radial × 256 angular) and turned into a stone-like artifact via 14-step terracing, seam carving, and a tapered envelope. 

Color is embedded per-vertex: a lapis / ivory / gold base with teal/violet accents plus 13-hue indexing tied to the circle IDs, finished with a subtle angular sparkle shimmer.

Mesh: 61,058 verts / 122,112 faces, closed manifold (χ=2, watertight). PAPP seed [64,24,13,16], β*≈29.25, (p,q)=(3,29), triple (832,174,850), V4≈4082.

Generated by PAPP - Polytopic Archetypal Projection Protocol

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