360° Skybox Generator — Full-Sphere Skies from a Text Prompt

Last updated 2026-07-08

Atmos Forge generates full 360° skyboxes — complete spherical environments covering every viewing direction, including the zenith and horizon — from a single text prompt. Output is seamless 2:1 equirectangular, ready for game engines, VR scenes, Three.js, Babylon.js, and 360° viewers.

True full-sphere coverage: 360° horizontally and 180° vertically in one 2:1 equirectangular image.
Works for games, VR backdrops, 360° tours, and browser-based 3D.
Wrap seam repaired with the free Fix Seam tool; poles handled without pinching artifacts.
Import your own 360° photos and renders and edit them with the same tools.

What makes a skybox “360°”?

A 360° skybox covers the entire viewing sphere — every horizontal direction plus straight up and straight down — in a single equirectangular projection twice as wide as it is tall. When an engine maps it onto a sphere or cube around the camera, the viewer can look anywhere and see continuous environment.

The hard parts are the wrap seam (the left and right edges must match exactly) and the poles (the top and bottom rows of pixels converge to single points). Atmos Forge generates with both in mind and provides repair tools for imported images that weren't.

How do I make a 360° skybox from text?

Write a prompt describing the environment — time of day, weather, terrain, style.
Choose a style and mood preset tuned for equirectangular output.
Generate and preview the result on an interactive 3D sphere in the browser.
Fix the wrap seam and add celestial bodies, star fields, or sprites as needed.
Export and load it into your engine, VR project, or web viewer.

Can I use 360° skyboxes for VR?

Yes. Equirectangular panoramas are the standard backdrop format for VR scenes and 360° tours. Because VR users can look in any direction, the seamless wrap and clean poles matter even more than on a flat screen — which is exactly what the Fix Seam tool and pole-aware generation address.

What is the difference between a 360° skybox and a panorama?

A panorama can be any wide image, often covering only part of the view. A 360° skybox is a full spherical panorama in equirectangular projection: exactly 2:1 aspect, wrapping seamlessly, covering all directions. Atmos Forge outputs the latter — and can convert your partial or imperfect panoramas into usable skyboxes with its repair tools.

Frequently asked questions

What aspect ratio is a 360° skybox?

2:1 — twice as wide as tall. That is the equirectangular projection: 360° of longitude mapped to the width and 180° of latitude mapped to the height.

Can I view the skybox before exporting?

Yes. Atmos Forge previews every skybox on an interactive 3D sphere in the browser, so you can inspect the seam, poles, and horizon before downloading.

Does it work for 360° video or tours?

The output is a static 360° image, which works as a backdrop in 360° tour software, VR scenes, and any viewer that accepts equirectangular stills.

Can I edit a 360° photo I already have?

Yes. Import any 360° photo or render and use the seam repair, celestial body, star field, and sprite tools on it directly.

About Atmos Forge

Atmos Forge is a web-based AI skybox generator for creating seamless 360° equirectangular skyboxes, cubemaps, and HDRI environment maps for game engines and 3D workflows. It combines AI text-to-skybox generation with procedural sky composition tools — seam fixing, suns, moons, planets, star fields, and sprite compositing — and exports game-engine-ready files for Unity, Unreal Engine, Godot, Blender, Three.js, Babylon.js, and WebGL. Atmos Forge is made by Big Monk Games.

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