AI Skybox Generator

Generate game-engine-ready skyboxes from a text prompt. Equirectangular 2:1, 1K–4K, free trial.

6 credits

Try:

Built for game engines

Game-engine-ready 2:1 equirectangular

Drop straight into Unity (Skybox/Panoramic shader), Unreal Engine (HDRIBackdrop), or Blender (Environment Texture). No format conversion needed.

8 game scene presets

Sci-fi space station, fantasy castle, cyberpunk street, post-apocalyptic wasteland, underwater ruins, alien planet, mountain valley, mecha hangar — picked for the most common game environment archetypes.

Wraparound check

Our prompt rewriter asks the model to connect the left and right edges. This guides generation but does not guarantee an invisible seam. Inspect the result through a full rotation before using it as a skybox.

Powered by GPT-image-2

Built on OpenAI's latest image model (the same engine behind ChatGPT image generation). Specialized for panoramic output.

Convert to cubemap

Generated a panorama? Convert it to 6 cube faces in one click for legacy Unity pipelines and cube-based Three.js workflows via our Cubemap Generator.

Commercial license

Every paid plan and credit pack includes full commercial use rights — ship in your game, on Steam, on consoles.

From prompt to engine in 60 seconds

1. Describe your scene
Pick a preset or write your own 10-30 word prompt. Style modifiers (cyberpunk, fantasy, sci-fi) work great.
2. Generate at 1K, 2K, or 4K
1K for fast iteration, 2K for web, 4K (3840×1920) for VR or detailed engine scenes.
3. Preview in 360°
Inspect the result in our embedded viewer before downloading. Catch seam issues early.
4. Drop into your engine
Unity, Unreal, or Blender — copy-paste setup below. Convert to cubemap only if your pipeline needs 6 faces — Unreal and Blender take the panorama directly.

Drop into your engine

In Unity, drag the downloaded PNG into Assets. Set Texture Type to Default, Wrap Mode to Clamp, Filter Mode to Bilinear.
Create a new Material (Assets → Create → Material). Set its Shader to Skybox/Panoramic.
Drag the panorama texture into the material's Spherical (HDR) slot.
Open Window → Rendering → Lighting → Environment. Set Skybox Material to your new material.
Click Generate Lighting to update GI.

// Assign at runtime (optional)
using UnityEngine;

public class SkyboxLoader : MonoBehaviour {
    public Material skyboxMaterial;

    void Start() {
        RenderSettings.skybox = skyboxMaterial;
        DynamicGI.UpdateEnvironment();
    }
}

Unreal Engine HDRIBackdrop setup screenshot

Import the PNG into Content Browser. Texture Compression Settings: HDR (RGBA16F) for best results.
Place → Visual Effects → HDRIBackdrop into your level.
In the HDRIBackdrop details, set Cubemap to your imported texture.
Adjust Intensity, Size, and Projection Center to match your scene scale.
Save level. Backdrop is now visible and contributes to Lumen GI.

// UE5 Blueprint equivalent — assign in BeginPlay:
// AHDRIBackdrop* Backdrop = ...;
// Backdrop->Cubemap = LoadObject<UTexture2D>(nullptr, TEXT("/Game/Skyboxes/MyPanorama.MyPanorama"));

In Blender, switch to the Shading workspace.
Select World in the shader editor mode dropdown (top-left).
Shift+A → Texture → Environment Texture. Open your downloaded panorama.
Connect Environment Texture Color → Background Color.
Render in Cycles or Eevee — Cycles uses it for full IBL, Eevee uses it for reflection probes.

import bpy

world = bpy.context.scene.world
world.use_nodes = True
nodes = world.node_tree.nodes
links = world.node_tree.links

bg = nodes['Background']
env = nodes.new('ShaderNodeTexEnvironment')
env.image = bpy.data.images.load('/path/to/panorama.png')
links.new(env.outputs['Color'], bg.inputs['Color'])

Roblox Skybox Generator: Six Faces for a Custom Sky

A Roblox sky is not one panorama. It is a Sky object with six square images, one per cube face. So the route has two steps: generate a 2:1 panorama here, then cut it into six PNGs named after the Roblox Sky properties with the Cubemap Generator. The whole custom skybox takes a few minutes, and the cutting step runs in your browser.

Describe the sky you want in the generator above and generate it. 2K is enough for 1024 px faces: a face can be at most as tall as the source panorama, and 2K output is 2048 × 1024.
Download the PNG and open the Cubemap Generator. The Roblox naming preset is already selected; set the face size to 1024, convert, and download the zip.
In Roblox Studio, publish the place first (Studio only uploads assets to a published place), then open View → Asset Manager and import the six images.
In the Explorer, insert a Sky object into Lighting. Right-click each image in Asset Manager, choose Copy Asset ID, and paste it into the Sky property with the same name: SkyboxBk, SkyboxDn, SkyboxFt, SkyboxLf, SkyboxRt, SkyboxUp.
To turn the sky, set the Sky's SkyboxOrientation property (in degrees; Y is applied first). To make the skybox spin in Roblox Studio, Roblox's documentation has a short Heartbeat script that updates this property every frame.

Or set all six faces from the Command Bar (replace each ID):

-- Upload the six images in Asset Manager, then replace each ID below.
local sky = Instance.new("Sky")
sky.SkyboxBk = "rbxassetid://SKYBOXBK_ID"
sky.SkyboxDn = "rbxassetid://SKYBOXDN_ID"
sky.SkyboxFt = "rbxassetid://SKYBOXFT_ID"
sky.SkyboxLf = "rbxassetid://SKYBOXLF_ID"
sky.SkyboxRt = "rbxassetid://SKYBOXRT_ID"
sky.SkyboxUp = "rbxassetid://SKYBOXUP_ID"
sky.Parent = game:GetService("Lighting")

The export rotates the Up and Down images so they drop straight into the Sky object. Faces cut by other converters often need those two turned by hand.

Example generations

Sci-fi Space Station

Prompt

futuristic orbital space station interior, panoramic windows, planet outside, polished metal walls, cinematic game lighting

AI Skybox vs HDRI Haven vs Asset Store

When to use each

Feature	AI Skybox Generator	HDRI Haven	Asset Store
Custom subject	Anything you can describe	Their library only	Their library only
Generation time	30-60 seconds	Browse + download	Browse + purchase + download
Commercial license	Included (Pro plans)	CC0 (free)	Varies by listing
True HDR (32-bit)	No (LDR source)	Yes	Some
Cost	$0 trial, then subscription	$0	$5-50/asset

Use HDRI Haven for free real-world environments. Use Asset Store when you need stylized scene-specific kits. Use AI Skybox Generator when you need a specific, custom-described scene that doesn't exist in any library.

A Skybox AI alternative for Unity, Unreal, and Blender

If you landed here looking for a Blockade Labs Skybox AI alternative, here is the honest comparison. Blockade Labs built its own generation model, exports up to 8K, and ships a matching depth map — genuinely useful if you need parallax or extra pixel density. We do not match those three things.

What we do differently: generation runs on GPT-image-2 at 1K, 2K, or 4K, and every output is a 2:1 equirectangular PNG that drops straight into a Unity Skybox/Panoramic material, an Unreal HDRI Backdrop, or a Blender Environment Texture. If your pipeline still needs six faces, the Cubemap Generator slices the result in your browser — no re-upload. When you need image-based lighting rather than a backdrop, the AI HDRI Generator writes the same view into a Radiance .hdr container. Credits include a commercial license, and a free trial covers one full generation.

Choose Skybox AI when 8K resolution or a depth map is a hard requirement for your scene. Choose this skybox generator when you want a specific described environment as an engine-ready 2:1 file, a cubemap in the same session, and an HDRI path for the moments when lighting matters more than the view behind it.

Need 6 cube faces instead?

Convert your skybox to a 6-sided cubemap in our Cubemap Generator — runs in your browser, no upload, free.

FAQ

Can I use the generated skybox commercially?

Yes — every paid plan and credit pack includes a full commercial license. Ship in your game on Steam, consoles, mobile stores, or as part of a paid Asset Store listing.

What resolution should I use for mobile VR?

2K (2048×1024) is the sweet spot for Meta Quest 2/3 — it looks sharp without exceeding mobile GPU texture limits. 4K (3840×1920) is fine for Vision Pro and high-end PC VR but may be overkill on standalone Quest.

Does it work with URP / HDRP / Built-in pipeline?

All three. URP and HDRP both ship with Skybox/Panoramic shader support. Built-in pipeline uses the same shader. For HDRP IBL contribution, use the Sky and Fog Volume → HDRI Sky override pointing to the same texture.

Will my skybox have a visible seam?

A visible seam is possible. The prompt asks the model to align the left and right edges, but results vary. Inspect the skybox in the viewer; if the boundary is noticeable, simplify the prompt and generate again.

Can I generate cubemaps directly?

Not yet. Generate a panorama first, then convert to cubemap in your browser in one click — no re-upload, no API cost.

Is this the same model as ChatGPT?

We use OpenAI's gpt-image-2 — the latest image model behind ChatGPT's image generation. We specialize the prompt for equirectangular 2:1 panoramic output and verify wrap-around quality. We are not affiliated with or endorsed by OpenAI.

How is this different from Blockade Labs Skybox AI?

Different image model (we use GPT-image-2; they use their own). Different pricing tiers. Different feature set — Blockade Labs has 8K and depth maps; we have lower starting price and prompt-driven cubemap conversion in the same workflow. Pick whichever fits your project budget and resolution needs.

Can I export as HDR for IBL lighting?

Yes — use our dedicated AI HDRI Generator. It outputs the same 2:1 equirectangular panorama wrapped in a Radiance .hdr container, suitable for Blender Cycles, Unreal HDRI Backdrop, and Unity HDRP environment lighting. Honest note: source is 8-bit LDR; we don't fake true 32-bit HDR.