How can we help?

Start at the diamond and drag the glowing beam from dot to dot, like a phone pattern lock, in any of 8 directions. Light every ring to finish the board. Drag back along the beam to undo. Settings → How to play replays the short tutorial.

There's no timer and you can't lose. The shortest path earns three stars; a longer path earns fewer.

Dead LEDs. The beam can't pass through them, so you have to find a way around.

Every day there is one new board, the same for every player. Finish it to keep your streak and see where you rank on the anonymous leaderboard. A new one starts at midnight in your time zone.

A hint shows the next dot of a best path. You get free hints every day; hint packs are sold in the shop, and Prismo Plus gives unlimited hints.

Yes. Levels and the daily board work offline. Only the leaderboard needs a connection; your result is uploaded when you're back online.

Finish the daily board to keep your streak. You earn a streak freeze for every 7-day streak (hold up to 2); with Plus you also get one every week (hold up to 3). A freeze covers a missed day automatically. Travelling across time zones never breaks a streak.

Yes. Players show as random names like "Player 3F9A". We don't store your Apple or Google account, your email or your IP address with it. Details are in our Privacy Policy.

All six worlds, every past daily, unlimited hints, no ads between levels and a streak freeze every week. Monthly or yearly, with a 7-day free trial on the yearly plan. Levels to start with, the daily board, streaks, stats and the leaderboard are free for everyone.

iPhone Subscriptions are managed by Apple: Settings → [your name] → Subscriptions → Prismo Plus. Cancel at least 24 hours before renewal. Refunds: reportaproblem.apple.com.

Android Subscriptions are managed by Google Play: open the Play Store app, tap your profile picture, then Payments & subscriptions → Subscriptions → Prismo, or go to play.google.com/store/account/subscriptions. Cancel at least 24 hours before renewal. For refunds, see Google Play's refund policy.

Open Prismo's Settings and tap Restore purchases. Make sure you're signed in with the same Apple Account (iPhone) or Google Account (Android) you used to buy. Hints you already used can't be restored, and purchases don't carry over between iPhone and Android.

No. Prismo works without signing up. There is an optional Sintios account (Settings → Have a Sintios account? Sign in): you enter your email, we send a one-time sign-in link, and anything already linked to that account turns on in the game. There is no password.

Your puzzles, streak and stats are stored only on your phone: deleting the app deletes them. Leaderboard and challenge entries are anonymous and are deleted automatically (leaderboard rows after 14 days, challenge links after 30). To delete a Sintios account, see Delete your data in the privacy policy.