PRIVACY POLICY
Last updated 7 November 2026
Massacre.io ("we", "us") runs the Massacre.io game at massacre.io. This policy explains what we collect when you play or contact us, why, how long we keep it, and your choices. We collect as little as we can: there are no accounts, and we never ask for your real name to play.
What we collect and why
| What | Why | How long |
|---|---|---|
| The name you choose to play under | Shown to other players in the round. It is filtered for offensive words. | Only while you're in the round. It is also kept in your own browser so you don't have to type it again. |
| Your moves and key presses during a round | To run the game: the server works out what happens and tells each player what they can see and hear. | Only in memory while the round runs. Not stored. |
| Chat and emotes | Passed on to the other players in your room after filtering. | Not stored. |
| Your IP address | To connect you, and to stop abuse: limits on connections, and bans. For these we use a one-way scrambled code made from your IP address (a keyed hash), not the address itself. | The code is held in memory while you're connected. If you're banned, the code (not your IP address) is kept until the ban is lifted. |
| Web server logs: IP address, page requested, browser type, time | Security and fixing faults. | 14 days. |
| Game events: a round started, how many players and bots, items used, disconnects, reports | To balance the game and keep it running well. | Kept without your name or IP address. |
| Player reports: the room, the names involved, the scrambled address code, the reason | So we can review cheating and abuse. | Until it has been reviewed, at most 500 reports, cleared when the server restarts. |
| Contact form: your name, email, subject and message | To answer you. | Until the conversation is finished, then deleted within 12 months, or sooner if you ask. |
What stays on your device
The game stores a few things in your browser's local storage, not in cookies, and they never leave your device unless noted: your player name, whether sound is muted, your chosen server region, and your profile (level, experience points, stats and unlocked cosmetics). Clearing your browser's site data removes them, and your progress with them.
Clips you save with K are recorded in your browser and saved straight to your device. They are never uploaded to us.
Cookies and advertising
The game itself does not set cookies. We show, or may show, adverts from Google AdSense on this site. Google and its partners use cookies and similar technology to show adverts, to limit how often you see an advert, and to measure them.
- Third-party vendors, including Google, use cookies to serve ads based on your previous visits to this website or other websites.
- Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the internet.
- You can opt out of personalised advertising in Google's Ad Settings, or opt out of some third-party vendors' cookies at aboutads.info and youronlinechoices.eu.
- If you are in the UK, the European Economic Area or Switzerland, you will be asked for your consent before personalised adverts or advertising cookies are used, and you can change your choice at any time from the privacy link in that message. Without consent you may still see non-personalised adverts.
Read how Google uses information from sites that use its services. What Google collects is covered by Google's own privacy policy, not this one. We never give advertisers your name or email address.
If you play Massacre.io on another games site, such as Poki or CrazyGames, that site shows its own adverts under its own privacy policy.
Who else handles your data
- Cloudflare delivers the website and protects it from attacks, so it sees your IP address and the pages you request.
- Hetzner hosts our game server in Finland, in the EU.
- Liquid Web hosts our email in the United States, so messages you send through the contact form are stored there.
- Google provides advertising, as described above.
We do not sell your personal data.
Our legal basis
Under UK and EU data protection law we rely on our legitimate interests to run the game, keep it secure and stop cheating and abuse; on your request when we answer your messages; and on your consent for personalised advertising where the law requires it.
Children
Massacre.io is a horror game meant for players aged 13 and over. It is not aimed at younger children and we do not knowingly collect personal data from them. If you think a child under 13 has sent us personal data, contact us and we will delete it.
Your rights
You can ask to see the personal data we hold about you, ask us to correct or delete it, object to how we use it, or withdraw your consent. Because we keep so little, and most of it only by a scrambled code, we may need to ask for details, such as when you played and the name you used, to find anything. Send requests through the contact form. You also have the right to complain to your data protection authority; in the UK that is the Information Commissioner's Office.
Changes
If we change this policy we will update the date at the top of this page.
Questions? Use the contact form.