Terms of service

Plain-English terms for BigBrain product subscriptions (godspeed, ash, alice, conjure, boltzmann), operated by BigBrain LLC.

The deal

BigBrain products are licensed, not sold: one monthly subscription covering the products you chose (see pricing). Founders keep their price for as long as their subscription stays active; each product’s price doubles for new subscribers at its 1.0.
One subscription = one person. Install your products on the machines you personally use — a license key works on any supported OS and moves between your computers freely.
Everything you make with our products is yours — no claim on your work, no telemetry of it. That is unconditional and it does not expire with your subscription. Artwork you create in godspeed is yours outright: meshes, textures, materials, scenes and anything else you author stay yours to use, sell and license anywhere, forever, whether you subscribe or not. We claim nothing on them, ever.
The one thing that is not free forever is running our runtime, which is a separate matter from what you made with it — see the runtime below. While you subscribe, it costs nothing.

Each product in your subscription has its own license key. Your keys are yours; do not publish or resell them. A key that leaks into public circulation may be revoked (we will re-issue to the legitimate owner).
Changing your product mix is a plan switch in the Stripe billing portal; keys for added products arrive by email, keys for removed products deactivate at the switch.
Cancel any time from the Stripe billing portal link in your receipt emails; your products keep working until the paid period ends, plus a short grace window.

Every BigBrain product runs on the godspeed runtime. While your subscription is active, the runtime costs you nothing beyond the subscription: ship what you build on it, sell it, charge whatever you like, and you owe us no royalty and no revenue share.
If your subscription ends, any application or model you continue to run on the godspeed runtime carries 1% of the gross revenue it earns from that point on — gross meaning what your users pay you, before your own costs, platform fees and taxes.
This is never retroactive. Revenue you earned while subscribed is not counted, ever, no matter how much of it there was. The 1% applies only to what an application earns after the subscription that built it has lapsed.
Artwork is exempt. The 1% attaches to running our runtime, never to what you made with our tools. Selling meshes, textures, materials or scenes you authored in godspeed carries nothing, subscribed or not.
Why this exists: people build things on the runtime and then depend on it for years, long after they stop paying. Keeping it working — ported, patched, and secure — costs us something whether or not the people relying on it are still subscribers, and the 1% is that cost. Keeping a subscription is always the cheaper path, and it is the one we would rather you take.

The software is provided as-is, without warranty; our total liability is capped at the fees you paid in the last 12 months.
Payments are processed by Stripe; we never see or store your card number.
These terms may evolve with the product; material changes are announced by email.