Privacy Policy
Last updated: 14 November 2026
MYTHSEA (mythsea.io) is a free multiplayer ship battle game played in the browser. There are no accounts, no sign-up and no payments. This page explains what information is used when you play, and how advertising on the site works.
What we do not collect
We do not ask for your name, email address, phone number or any other contact details, and we do not keep a database of players. We do not sell personal information.
Information used while you play
- Nickname. If you type a nickname, it is sent to the game server and shown to the other players in your match. The server forgets it when you leave.
- Game input. Your key presses (steering and firing) are sent to the game server to run the match. They are not stored.
- IP address. Like any website, the server sees the IP address of your connection. It is used to deliver the game and to limit how many connections one address can open, to protect the service from abuse. It is written to the server's technical logs only when a connection is refused for exceeding a limit.
- Usage counts. The server keeps daily totals, such as how many players were online, how many matches were joined, how long a visit lasted, how many matches it included and the place reached in the first one, and how many visits and players came from each site (the name of the site that linked to or embeds the game, such as itch.io, or "direct"; never the full address). These are numbers only and identify no one.
Storage in your browser
The game itself uses your browser's local storage, not cookies, to remember:
- the nickname you typed, so you don't have to type it again;
- your sound volume and mute setting.
These stay on your device and are never sent to us, except for the nickname as described above. You can delete them at any time by clearing this site's data in your browser.
Advertising and cookies
We use Google AdSense to show ads. Google, as a third-party vendor, uses cookies to serve ads on this site:
- Google's use of advertising cookies enables it and its partners to serve ads to you based on your visits to this site and/or other sites on the Internet.
- You can opt out of personalised advertising in Google Ads Settings. You can also opt out of some third-party vendors' use of cookies for personalised advertising at www.aboutads.info.
- How Google uses information from sites that use its services is explained at policies.google.com/technologies/partner-sites.
Visitors from the European Economic Area, the United Kingdom and Switzerland are asked for consent before personalised ads and cookies are used, through Google's consent message.
Your privacy choices in US states
Under the privacy laws of some US states (such as California, Colorado, Connecticut, Virginia and Utah), sharing information with advertising partners for personalised ads may count as a "sale" or "sharing" of personal information, or as targeted advertising. If you are a resident of such a state, you can opt out at any time through the Do Not Sell or Share My Personal Information link shown on the site, which is provided by Google. After you opt out, ads you see may still appear, but they will not be personalised. You can also write to us at the address below. We will not treat you differently for using these rights.
Service providers
- Cloudflare delivers the site and protects it from attacks. It processes connection data such as your IP address to do so, and provides us with anonymous page-view statistics (Cloudflare Web Analytics, which uses no cookies). See Cloudflare's privacy policy.
- DigitalOcean hosts the game servers, in Germany, the United States and Singapore. You are connected to the one with the fastest response.
- Google provides advertising, as described above. See Google's privacy policy.
Children
The game is not directed at children under 13, and we do not knowingly collect personal information from them.
Your rights
Because we keep no accounts or player records, there is usually nothing about you stored on our side. If you have a question or a request about your data, write to us and we will answer.
Changes
If this policy changes, the new version will be published on this page with a new date.