About the game
linkdot.app is dots and boxes on the back page of a school notebook: players take turns connecting two neighbouring dots, and whoever closes a box claims it and draws again. You play on a 3 × 3, 5 × 5 or 7 × 7 board against Dot at three difficulty levels, or against another player: by a challenge in the game, or by an invite link your friend can open even without an account. The game is free, with no ads and no in-game purchases. The Czech version runs at spojuj.cz.
The operator has more games in the notebook: gomoku at gomoking.com against Rowie and battleship at hitsink.app against Finn. Accounts are separate; each game has its own.
Dot, his drawing, name and lines are the work of the operator and are protected by copyright. You may play the game and share a link to it, but you may not copy its artwork or code without our permission.
Leaderboard and report card
The leaderboard ranks players with an account by points for wins: 30 against Dot on hard, 20 on medium, 5 on easy, 25 against a person, half for a draw. It is public and shows your nickname and points.
The report card is your private assessment from Dot. It gives Czech school marks from 1 (best) to 5 for four things: boxes (what share of the boxes you take in a game), chains (how many boxes you can close in one run), speed (how long you think about a line) and stamina (how many of the games you start you finish). It is based on your last 30 games; the first marks appear after three finished games. It is for fun and only you can see it.
Operator
- Company
- LIONED.CZ s.r.o.
- Registered office
- Rokycanova 2798, Zelené Předměstí, 530 02 Pardubice, Czech Republic
- Company ID (IČO)
- 10800522
- VAT ID (DIČ)
- CZ10800522
- Registration
- Commercial Register kept by the Regional Court in Hradec Králové, file C 47571
- info@lioned.cz
- Phone
- +420 603 415 306
- Web
- lioned.ai
Rules of use
Account
- You can try the game and accept an invite link without an account, as a guest; a guest's results are reachable only from this browser until you create an account. An account needs a nickname and a password. E-mail is optional; it's handy if you forget your password and for news, if you ask for it.
- You are responsible for your password. Don't share it and don't reuse a password from elsewhere.
- A nickname must not be vulgar, offensive, impersonate someone else or contain contact details. We may rename or close such an account.
- You can close your account at any time by e-mailing info@lioned.cz, see Privacy.
Play and fair conduct
- A line connects two neighbouring dots horizontally or vertically. Whoever draws the fourth side of a box claims it and draws again (one line can close two boxes). The game ends when all lines are drawn; whoever has more boxes wins, equal counts are a draw. In a game between two players you have one minute per line. If you don't make it, you lose. Whoever loses the connection for more than a minute and a half forfeits the game.
- Don't use tools that play for you, and don't create multiple accounts to get around a block.
- Be civil in the chat. Swearing, threats, harassment, spam, links to other websites and sharing other people's personal details are not allowed. You can block another player at any time; they can then neither challenge you nor message you.
- We store the chat so that we can handle complaints. If you break the rules we may restrict or close your account.
Availability and liability
- The game is provided free of charge, as is. We don't guarantee uninterrupted service or that scores are kept forever; we may change, suspend or end the game.
- We are not responsible for what other players write in the chat, but we act on reports.
- We may update these rules. A new version will be published on this page with its effective date; for substantial changes we'll also let you know in the game.
Privacy
We try to collect only what the game really needs. Here is what we hold about you, why and for how long.
| What | Why | Legal basis | How long |
|---|---|---|---|
| nickname, password (stored only as a hash, never readable) | account, login, your score; your nickname and points are shown on the public leaderboard | performance of a contract (rules of use) | while the account exists |
| e-mail (only if you enter it) | password recovery; news about the game if you tick the box | contract; for news your consent, which you can withdraw at any time | while the account exists; news until withdrawn |
| games: all lines of both sides, thinking times, result, difficulty, board size | gameplay, score, improving Dot | contract; legitimate interest in improving the game | while the account exists, then anonymously (no link to you) |
| chat messages in two-player games | gameplay, handling conduct complaints | contract; legitimate interest in a safe environment | 12 months after the game |
| last activity time, challenges, invite links, blocks | “who is online”, challenges, protection from harassment | contract; legitimate interest | activity 60 s, challenges 12 months, blocks until unblocked |
| IP address and browser type when a game is created | security, detecting abuse and cheating | legitimate interest | 12 months, then deleted |
Who has access
Only the operator. The data runs on the operator's server in the Czech Republic (EU). We don't sell it, don't transfer it outside the EU and use no third-party advertising or analytics services. Fonts and all other page files are served from our own server; your browser does not connect to any third party while you play.
Your rights
- You can ask for a copy of your data, a correction, erasure (closing the account), restriction of processing, or object to it. You can withdraw consent to news via the link in every e-mail or by writing to us.
- Write to info@lioned.cz from the e-mail on your account, or state your nickname and confirm ownership by logging in. We reply within 30 days.
- When an account is closed we delete the nickname, password, e-mail and blocks; played games remain as anonymous data, with no link to you, for improving Dot.
- If you believe we handle your data wrongly, you can complain to the Czech Office for Personal Data Protection (Úřad pro ochranu osobních údajů), Pplk. Sochora 27, 170 00 Praha 7, uoou.gov.cz, or to your local supervisory authority.
Children
Anyone can play. A nickname is all it takes, and we collect nothing more about children. If you are under 15, you may sign up for e-mail news only with a parent's consent. If we learn that we hold a child's data without consent, we delete it.
Contact
Ideas, bugs, a complaint about a player or anything about personal data: info@lioned.cz. For a complaint about chat conduct, include the player's nickname and the approximate time of the game; we'll look up the messages.
Approved by Hugo
Everything on this site, from Dot's ruler to the personal-data table, goes through a single approval process: Hugo closes his eyes, breathes out deeply and opens them again. If he disagrees, we rewrite it. So far he has agreed with everything you're reading.
Who Hugo is and why he has the final say in a family business is revealed at lioned.ai. We'll only hint that he has four legs and his own seat at the table.