Last updated October 4, 2026
Your data,
plainly.
404 skill is built so most pages can be served and played without ever knowing who you are. Here is exactly what is collected, what is not, and how to turn it off.
What is collected
Game progress in your browser. Some games (Word Guess, 2048, Four in a Row, Snake, and a few others) save settings, statistics, or high scores to your browser'slocalStorageso a refresh does not lose your run. The home page also remembers which games you have opened, for “Jump back in” and the “Tried” marks. That data never leaves your device. Clear your browser storage to reset it.
Scoreboards, only if you submit. Some games show an online top 10. Nothing is sent unless you press Submit at the end of a run. Then the nickname you typed, your score or solve time, and the date go to our scoreboard server (api.mohammadshehadeh.com, stored in Google Firebase), and if the score makes the top 10 your nickname and score are shown publicly on that game's board. Runs that miss the top 10 are not kept. Your browser keeps a random player ID so your row can be updated when you beat it; the ID itself is never shown. Your IP address is used to limit how often scores can be sent, and is stored only as a one-way hash.
Game requests. If you use Request a game, the game name, your optional note, and the time are sent to the same server (api.mohammadshehadeh.com, stored in Google Firebase) so we can see what people want built. No name, email, or account is attached; your IP address is used only to limit how many requests can be sent, and is stored as a one-way hash.
Anonymous game popularity counts. When you open a game, your browser tells the same server (api.mohammadshehadeh.com, stored in Google Firebase) the game's name, and that game's visit count goes up by one. That count is all that is kept — per game and per day, never per person: no cookie, no ID, and nothing that links one visit to another. It powers “Trending” and “Most played” on the home page. Your IP address is used only so the same visitor isn't counted twice within half an hour, and is stored as a one-way hash.
Server logs.The hosting provider (Cloudflare) keeps short-lived request logs for operational and abuse-prevention purposes. These include IP address and user-agent and are retained per Cloudflare's default policy.
Advertising (Google AdSense). This site uses Google AdSense to display ads. Google and its partners use cookies and similar technologies to serve ads based on your prior visits to this and 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. Third-party vendors, including Google, may also use the advertising identifier described in Google's advertising policy. You can opt out of personalized advertising — see How to opt out below.
What is not collected
- · No accounts, no sign-ups, no email list.
- · No analytics of our own beyond the anonymous per-game counts above — no cookies, no fingerprint, no behavioral profile across visits.
- · No selling of your personal data by us to third parties.
- · No data collection beyond what the third parties named above (Cloudflare, Google Firebase for scoreboards you choose to join, game requests and the popularity counts, Google AdSense) collect to do their job.
How to opt out
Personalized ads. You can turn off personalized advertising from Google in Google Ad Settings. To opt out of personalized ads from other vendors, visit aboutads.info/choices. A network-level blocker or ad blocker also stops ad cookies from being set.
To remove locally stored game progress, clear site data for 404skill.com in your browser's privacy settings.
To stay off the scoreboards, just don't press Submit. To have a name you submitted removed, email the address below with the game and the nickname.
Questions
Email support@404skill.com with any privacy question, data-deletion request, or correction.
This page may be updated when the underlying tools change. The date at the top reflects the last revision.