Privacy
Short version: no accounts, no ads, no trackers. We keep only what makes the game fair.
No third parties in your browser. Fonts, scripts and the 3D engine are served from buildduel.com itself. There is no analytics, advertising or social tracking code on the site.
What we store
- A random ID cookie (
bo_uid, one year, HttpOnly). It is how we enforce one pick per person per fight and remember your upvotes. It contains no personal information. - Your picks, upvotes and suggested prompts, linked to that random ID. Suggested prompts are shown publicly without your name.
- A salted hash of your IP address, used only to cap votes from one network. The raw address is never stored.
- Your email, only if you sign up for the 18:00 drop. We use it for that and nothing else, and never sell or share it.
- On your device: your theme and sound settings and a copy of your picks, in local storage.
Where it goes
- Everything is stored in one database on our own server, backed up nightly. Backups are kept for 14 days.
- Prompts that make the card are sent to AI model providers through OpenRouter to generate the builds.
- Vote counts and per-fight results are published as open data. They never include IDs, IPs or emails.
Your choices
- Clearing your cookies starts you fresh. Your old picks stay counted anonymously.
- To remove your email or ask what we hold for your ID, write to [email protected].