Marble (World Labs)
Level & terrain generation · Free tier + paid- Commercial use
- Restricted (see notes)
- Free plan
- Free planUp to 4 world generations
- Ship free-plan output?
- Restricted: read the catch
- Engines
- Unity, Unreal
Marble (World Labs) vs Mirelo
Facts from each vendor's published pages, checked . Compare different tools →
Our ranking
In Trailers & marketing, Marble (World Labs) ranks #4 and Mirelo ranks #5. No independent quality tests found. Ranked on game-dev fit: commercial use restricted; Unity, Unreal integrations; API.
Mirelo
Music & SFX · Free tier + paid- Commercial use
- Commercial on paid plans only
- Free plan
- Free planFree €0/month: 5,000 credits, watermarked exports, non-commercial
- Ship free-plan output?
- No: paid plan needed
- Engines
- Any (standard file export / engine-agnostic)
Bottom line for game devs
- Commercial use: Marble (World Labs): restricted (see notes) terms. Mirelo: commercial on paid plans only terms.
- Free plan: Marble (World Labs): free plan (Up to 4 world generations) pricing. Mirelo: free plan (Free €0/month: 5,000 credits, watermarked exports, non-commercial) pricing.
- Shipping free-plan output in a paid game: neither allows it, per their published terms.
- API and MCP: Marble (World Labs): public API, MCP not stated by vendor. Mirelo: public API, official MCP server.
- Engine integrations stated by the vendor: Marble (World Labs): Unity, Unreal. Mirelo: none stated (standard file export).
Best for
Explorable 3D environments and flythrough shots
Sound effects and ambience synced to trailer or gameplay video
What it does
Generates persistent 3D worlds from text, images, video, 360° panoramas or blocked-out 3D layouts. Exports Gaussian splats and GLB meshes, and records camera flythrough videos.
Video-to-sound model (SFX 2.0) that generates sound effects, foley and ambience synced to a video while keeping its dialogue; also text-to-SFX, via a web studio, API and MCP server.
Verdict
For blocking out explorable environments or flythrough shots; exports go to Unity/Unreal via Gaussian-splat plugins, and commercial rights are listed on Pro.
For sound effects synced to trailer or gameplay footage; the free plan is non-commercial and watermarked, so anything you ship needs a paid plan.
Tasks●
Level & terrain generation, Trailers & marketing
Music & SFX, Trailers & marketing
Engines●
Unity, Unreal
Any (standard file export / engine-agnostic)
Free plan
Free plan Up to 4 world generations
Free plan Free €0/month: 5,000 credits, watermarked exports, non-commercial
Pricing
Free $0/month (7,000 credits, up to 4 world generations). Standard US$20/month (20,000 credits), Pro US$35/month (40,000 credits; commercial rights) and Max US$95/month (120,000 credits). Top-up credits from US$5 on Standard and above. Enterprise custom. The World API is billed separately. source
Free €0/month (5,000 credits, 3 projects, watermark on exports). Creator €20/month (24,000 credits), Studio €99/month (120,000), Scale €299/month (420,000), Business €999/month (1,440,000); extra credits €0.75–1.20 per 1,000; Enterprise custom. Billed monthly. Prices are published in euros only. source
Export formats●
SPZ and PLY Gaussian splats; GLB collider and high-quality meshes source
Not stated by vendor
Commercial use●
Restricted (see notes)
Billing docs list "commercial rights to generated worlds" on the Pro plan. Commercial terms for Free and Standard: unverified. source
Billing docs list "commercial rights to generated worlds" on the Pro plan. Commercial terms for Free and Standard: unverified. source
Commercial on paid plans only
Terms (last updated 9 Oct 2026): Free Plan users may use the Services and Output "exclusively for non-commercial purposes"; Paid Plan users may use them for commercial and business purposes. Rights in Output vest in you, subject to the plan limits and the Acceptable Use Policy (including its limits on training AI models). Free-plan output may carry a watermark and must credit Mirelo as the sound provider. source
Terms (last updated 9 Oct 2026): Free Plan users may use the Services and Output "exclusively for non-commercial purposes"; Paid Plan users may use them for commercial and business purposes. Rights in Output vest in you, subject to the plan limits and the Acceptable Use Policy (including its limits on training AI models). Free-plan output may carry a watermark and must credit Mirelo as the sound provider. source
Revenue share / caps
Not stated by vendor
Not stated by vendor
API
Available. World API (separate credits) source
Available. Mirelo API (text-to-SFX and video-to-SFX) source
MCP server●
Not stated by vendor. Not checked
Official MCP server. Hosted Mirelo MCP for Claude, Cursor, ChatGPT and other MCP clients source
Last checked
Rows marked ● differ between the two tools. Licence badges: green = commercial use allowed (including any free plan or trial), amber = paid plans only, restricted, or allowed but with no free plan, red = not allowed, grey = not stated by vendor or not applicable. Read the vendor's current terms before you ship.