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Epic Games

Unreal Engine

Game engine with source access and a royalty-based route for commercial games rather than a universal per-seat game fee.

Royalty-basedUnreal Engine EULASource checked 2026-10-09
Get it from the official source ↗Use this with my AI How do I use this? Source-checked listing. Not runtime-tested by BINX Forge.
CHECK FREE BEFORE YOU PAY

Could a free option meet your needs?

Reviewed free choices to compare: PlayCanvas · Unity · Defold. Check the actual workflow and export needs before paying; migration and replacement suitability still need testing.

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Make it yours
  • Check the exact licence before modifying, remixing or sharing any files.

Try one change first; integration and visual fit still need testing. Licensing summary, not legal advice. Before publishing or selling, check the creator's linked licence for your exact download, plan and intended use. Terms and restrictions may differ.

Free options to compare

Check whether a free option already covers your needs. Exact overlap, engine/rig fit and replacement suitability are not verified; check the selected edition and official terms.

HAS A FREE EDITION

PlayCanvas

JavaScript/TypeScript browser engine for 2D and 3D games. MIT standalone code; hosted Editor project privacy and collaboration have separate plans.

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HAS A FREE EDITION

Unity

Game-development editor with a free eligible Personal plan and paid plans for larger teams or finances.

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HAS A FREE EDITION

Defold

Free, source-available engine with Lua scripting, visual scene tools and HTML5, mobile and desktop exports. Strong 2D focus; 3D needs its own project checks.

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What’s inside

  • Game engine and editor
  • Source access under Epic terms
  • Standard and qualifying reduced game-royalty routes

Best for

  • 3D games
  • Shooters
  • Action games

Formats & dimensions

Creator-listed formats: Not recorded; check the original source.

Recorded dimensions: Not recorded; check the original source.

Formats can differ by edition. Check the selected download and your engine’s importer before adding files.

How it can improve your game

  • Start from an established game-engine foundation
  • Evaluate revenue-based costs before committing
COST & LICENCE

Know before you build.

Sell a game made with thisYes — conditions apply

Use protective end-user terms, retain notices/required credits and submit release notice before monetisation. Apply 5% standard or qualifying3.5% royalty with exclusions; royalty-game development has no seat fee for that use.

Resell the files themselvesUnconfirmed

Check exact permitted redistribution, recipients and channels; do not assume engine ownership or unrestricted resale.

Include in a template/source productYes — conditions apply

Recipients of Engine Code must hold a separate same-version licence. Engine Tools use Fab/Epic GitHub channels; Examples, Starter Content, plugins/assets and other code have separate scopes.

Scope: Royalty game containing Engine Code only inseparably in object code.

Source access is not an open-source licence. Game royalties and non-game seat subscriptions are different routes.

Read the official licence & usage terms ↗

Licensing summary, not legal advice. Before publishing or selling, check the creator's linked licence for your exact download, plan and intended use. Terms and restrictions may differ.

Choose the right edition

No edition in this cost group. Try All.

Limitations & compatibility
  • Source access is proprietary EULA access, not open-source clearance or a generic asset licence.
  • Upfront licence fee0 does not mean royalty-free or cost-free development. The per-product USD1m exclusion is distinct from company revenue or seat exceptions.
  • Non-game/royalty-free commercial uses have different seat rules/exceptions; official USD1850 per seat/year is not a mandatory fee for ordinary royalty games.
  • Third-party/Fab assets, Starter Content, Examples and Engine Tools have distinct distribution terms; game-sale permission does not clear arbitrary source/template contents.
  • Licensed Technology must not be used for AI training or as prompt input to AI that trains on input; see EULA6(e). No engine code or purchased files are uploaded by this research.
  • No engine install, target/native run, royalty filing, licence acceptance, source access or preview rehosting is performed.
  • Recorded dimensions/formats stay unchanged; no new importer compatibility claim.
  • Examples have a separate EULA distribution permission; Starter Content/Fab content and Engine Tools do not inherit that permission. Retain full notices and required credits.
  • Reduced3.5% rate requires qualifying release/content/feature/marketing parity; check current iOS waiver and reinstatement notice. Release-form duty remains; current terms no longer make the USD1m exclusion depend on a timely form.
  • Do not combine Licensed Technology with licences that would require incompatible terms; inspect EULA6(c), including its dynamic-link LGPL distinction.
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