Privacy
Micro Mouse · updated November 7, 2026
Micro Mouse doesn't ask for your real name, your email or an account. This page covers the website at playmicromouse.com, the iOS app, the Android app and the version on CrazyGames.
What we receive
- A random racer ID made on your device the first time you play. The server keeps a scrambled version of it, so your runs and medals stay together.
- Your racer name, if you set one. It's shown on the public daily leaderboard. Names are checked against a list of blocked words before they're saved. Please don't use your real name.
- For each run: the date, a recording of your controls and your time. The server replays the recording to check the time before it's ranked.
- The kind of device the run came from (for example "iOS app", "Android app" or "Safari mobile"), so we can see whether checking works everywhere.
- Like any website, the server sees your IP address when the game connects.
What stays on your device
Your best ghost for each maze, your sound settings and whether you've seen the help cards.
The website
playmicromouse.com counts page visits with a self-hosted, cookie-free analytics tool. Cheese packs are paid through Stripe. Stripe handles your card details and we only receive a record of the purchase. Stripe's own privacy policy covers what it collects.
Ads
The website may show ads from Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on your earlier visits to this and other websites. Google's advertising cookies let it and its partners show you ads based on those visits.
You can turn off personalised ads in Google's ad settings, and opt out of other vendors' cookies at aboutads.info. Google explains how it uses this information in How Google uses information from sites or apps that use our services.
The iOS app
The app sends the data listed above and nothing else. It has no ads, no analytics library, no purchases and no tracking across other apps or websites.
The Android app
From the moment you open it, the Android app sends anonymous usage stats to an analytics server that Crest Systems runs itself (a self-hosted copy of Umami). They don't go to Google or to any outside analytics company. They cover:
- What happens in the game, such as starting and finishing a run, the level or daily maze, your time and medal, and which music track is playing.
- Your device type, Android version, screen size and language.
- Your approximate country. The analytics server works it out from your IP address when the app connects.
- A random install ID the app makes the first time it opens, so we can count return visits. It's separate from your racer ID and is never linked to it or to your racer name.
None of this is linked to your Google account or to an advertising ID, and it isn't sold or shared with anyone. We use it to see how the app is played and what to improve. The usage stats can't be turned off inside the app. Uninstalling the app, or clearing its data, deletes the install ID.
Nothing else leaves the app until you press Join on the leaderboard. Until then your runs, ghosts, level stars, cheese and garage choices stay on your device. After you join, it sends playmicromouse.com a random racer ID made by the app, your racer name, the date, and the recording of your controls and the time of each daily run, which the server replays to check before ranking it. The server also notes that the run came from the Android app. You can stop sharing from the same screen. The app has no ads, no purchases and no accounts.
CrazyGames
On CrazyGames nothing reaches our server until you press Join on the leaderboard. Your progress is saved by CrazyGames, and the board shows your CrazyGames username. You can stop sharing from the same screen.
What we don't do
We don't sell data or share your information with anyone except as described here.
How long we keep it
Runs and names stay as long as the daily board history exists, because medals are worked out from it.
Deleting your data
Email [email protected] with your racer name and we'll remove your runs and name. Deleting the app or clearing your browser's site data removes everything stored on your device.