One daily puzzle from each of four games — NULLFIELD, OXIDE, CONJECTURE and DEADHAND — on one page. Everyone gets the same puzzle on a given day. No account, no install, nothing to sign up for.
Your streaks, your play history and your results live in your browser's local storage, not on a server. Nobody else can see them, and they don't follow you to another device or browser.
The one thing that leaves your browser is a single result row per puzzle you finish: which game, which day, whether you solved it, and two numbers describing how (your time, your score, however that game measures it). It's tagged with a random id generated the first time you visit — not an account, not tied to your name or email, sent nowhere else, and cleared any time you use the reset control below. That row is what lets the solve screen tell you how you did against everyone else who played that day.
No cookies, no analytics, no ads, no tracking across sites. No accounts, no email, no push notifications. Nothing here follows you anywhere else.
These are free and always will be. If you want to buy me a coffee, that's appreciated but never required.