coilwars privacy

Last updated 29 September 2026

CoilWars is a free browser game. We collect as little as possible: you can play without an account, and even with an account we never see your email address.

Playing as a guest

• We store nothing about you on our servers. Your name, level, skins, hats, trophies and settings are saved only in your own browser (local storage) and you can clear them at any time.
• Our game server sees your IP address while you are connected. It is used only to run the game and to limit abuse (for example too many connections from one address), and it is not stored in our database.

Playing with an account (Sign in with Google)

Signing in is optional. If you do, we store:

• a random account identifier that Google gives us for CoilWars (not your email, name or photo; we only request Google's openid scope),
• the in-game name you choose,
• your game progress: XP, level, chosen skin and hat, the trophies you unlocked, totals such as games played and worms eaten, and a history of your matches (mode, length, kills, placement, time),
• a login session so you stay signed in.

Your in-game name, best lengths and number of wins are shown publicly on leaderboards.

Custom games

When you create a custom game, the server keeps its settings and join code in memory while the game is open, and forgets them shortly after everyone has left. Nothing about it is written to our database. Everyone in the game (and, if you list it, anyone browsing open games) sees the game's name, which includes the host's in-game name. Quick chat only offers preset phrases, so no free text is sent between players.

Cookies

Two cookies are strictly necessary: cw_session keeps you signed in (60 days), and cw_oauth protects the sign-in step (10 minutes). Guests get neither.

Analytics cookies are only set if you allow them (see below). There is no advertising.

Analytics (only if you allow it)

The first time you open the game we ask whether we may use Google Analytics. If you say no, Google Analytics is never loaded. If you say yes, it sets the cookies _ga and _ga_RSG3R04PEW (up to 2 years) and tells us:

• which pages are visited, and from which site or search you arrived,
• your device type, browser, screen size, language and approximate location (country or city, worked out from your IP address; Google Analytics does not store the IP address itself),
• when you start and end a game: the mode, your length, worms eaten, time alive and whether you were signed in.

We use this only to understand how CoilWars is played and to improve it. Google's advertising features and Google Signals are turned off, and we keep analytics data for at most 14 months. You can change your answer at any time in the game under Settings → Analytics cookies; turning it off also deletes the cookies.

Why we process this data

To provide the game and your account (the service you asked for), and to keep the game fair and secure (our legitimate interest in preventing abuse). Analytics is based only on your consent, which you can withdraw at any time.

Who else is involved

• Google handles the sign-in step when you choose to sign in, and provides Google Analytics if you allow it. Google may process analytics data in the United States under the EU-U.S. Data Privacy Framework (Google's privacy policy).
• Cloudflare delivers traffic to our site and protects it from attacks, and therefore processes IP addresses.
• Hetzner hosts our server in Finland (EU).

We never sell or share your data with anyone else.

How long we keep it

Account data is kept until you delete your account. Login sessions expire after 60 days. Daily database backups are kept for 7 days, so deleted data disappears from backups within a week.

Your rights

• Delete your account any time in the game: open Stats and choose Delete account. This removes your account, progress and match history immediately.
• You can ask for a copy of your data, or its correction, by emailing [email protected].
• You may complain to the Swedish Authority for Privacy Protection (IMY) or your local data protection authority.

Children

You must be at least 13 years old to create an account. Guests of any age can play without one.

Contact

[email protected]