Sektor Engine is free.
No royalties. No revenue share. No seat licenses. You download the engine, you ship your game, and everything you make with it is yours. One optional subscription exists - Sektor Complete - for more AI teammate usage and the full asset library. The engine itself never costs a thing.
Sektor Engine
- The full engine and Studio editor - nothing held back
- Ship commercial games with zero royalties
- All core features: renderer, physics, navigation, world streaming, packaging
- The control protocol is open: bring your own AI, free forever
- The built-in AI teammate: 30 free actions a day with a free account, as it rolls out
- No account required to download and build
Sektor Complete
- The first-party AI collaborator - 1,500 AI actions a month included, more than all-day building uses
- Every asset in the store, one subscription, one-click import
- Use in unlimited commercial projects, even after you cancel
- Free starter assets stay free for everyone - no subscription needed
- Every asset provenance-labeled; your content is never used to train AI
Your work
- Full ownership of your games, assets, and code
- No telemetry in shipped games
- Projects are plain files on your disk - no lock-in
- Deterministic runtime: your builds behave the same everywhere
Fair terms, in plain words
Do I owe anything when my game makes money?
No. There is no royalty and no revenue share at any income level. The engine is free to use commercially, full stop. This pledge is permanent: terms for existing users will never change retroactively.
Is the AI part of the free engine?
The control protocol - the interface an AI uses to drive the editor - is open and free forever. Connect any AI you like at no cost. The first-party collaborator - a hosted, tuned, always-current AI teammate - is rolling out in stages: every free Sektor account gets 30 actions a day, and Sektor Complete includes 1,500 actions a month, far beyond typical daily building. The engine never needs it - everything can be done by hand.
What happens to assets I imported if I cancel the subscription?
You keep them. Anything you imported into a project while subscribed stays licensed for that and future projects. The subscription gates new downloads, not your past ones.
Can I resell or redistribute store assets?
No - assets are licensed for use inside your games, not for redistribution as assets. The full text lives in the asset license.
Is my work used to train AI?
Never. Your projects, your uploads, and store assets are not used to train AI models. Assets in the store carry provenance labels so you always know how something was made.
Will the engine stay free?
Yes. The asset library subscription is the business model. The engine itself - including everything you need to ship - stays free.
The fine print: Engine EULA · Asset License · Terms of Service · Privacy