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Bug reports

Please include your browser, operating system, and a brief description of what went wrong. Screenshots help enormously.

Feature ideas

We read every suggestion. The more specific you are, the better we can evaluate whether and how to build it.

Partnerships

For collaboration inquiries, press coverage or sponsorship proposals, use the contact form and select "Partnership / Business".

Response time

We aim to respond within a few days. High-volume periods may take a little longer.

Frequently asked questions

Yes, completely free — forever. No account required, no purchases necessary to play. The cosmetic shop offers optional visual upgrades purchasable with in-game chips earned through gameplay.
All progress (XP, chips, unlocked cosmetics, skills) is saved locally in your browser's storage. Clearing your browser cache or using a different browser/device will reset your save data.
Yes. Tap to reveal, long-press or double-tap to place a flag. The easiest difficulties work well on touch screens; larger grids like Legend are better suited to a mouse.
In No-Guessing mode the game uses an advanced solver to generate only boards that are solvable by pure logic — no random guessing is ever required. Gadgets are disabled in this mode. Campaign mode always uses standard rules.
Use the contact form above, choose "Bug report", and describe what happened, your browser, and if possible the exact steps to reproduce the issue.
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