Who is responsible
BlockBlast100 (blockblast100.com) is run by PLAY100, a web game studio. The PLAY100 privacy policy covers every site in its network, including this one. This page adds the details that are specific to BlockBlast100. For questions, write to [email protected].
What you don't have to give us
You can play every game here without signing up. We never ask for your name, email address, password or payment details. The only time we receive an email address is when you write to us yourself.
Star ratings
Each game page has a 1 to 5 star rating. When you choose a rating, our server stores four things:
- which game you rated
- the number of stars
- the date and time
- a SHA-256 hash of your IP address. The hash is a one-way code made from the address; the address itself is not saved.
We use the hash to count one vote per internet connection. If you vote again from the same connection, your new rating replaces the old one. People who share a connection, for example on the same home or school network, share one vote. The page only ever shows the average and the number of votes.
Ratings are not deleted automatically. To have yours removed, email us your IP address at the time you voted and the game you rated. We can only find a rating by turning that address into the same hash.
Your browser also remembers your own rating, so the stars stay filled in when you come back. It is saved under the name rated: plus the game, for example rated:block-blast.
Cloudflare and server logs
All traffic to blockblast100.com passes through Cloudflare, a network service that delivers the pages and protects the site from attacks and bad bots. To do that, Cloudflare receives each request, including your IP address, the page asked for and your browser type. Cloudflare says this data may be processed in its data centers in the United States.
Depending on the security check, Cloudflare can place cookies that it describes as strictly necessary. For example, __cf_bm helps tell people from bots and expires after 30 minutes of inactivity, and cf_clearance remembers that you passed a security check. Cloudflare lists all of them on its cookie page.
Our own web server also keeps access logs. A log line usually holds the IP address, the page or file requested, the time, the browser type and the page that linked to us. We use these logs only for security, for fixing errors and for keeping the site fast.
What the games save on your device
The games we host save your progress in your own browser storage. This data stays on your device and is not sent to us.
| Game | Saved in your browser |
|---|---|
| Block Blast Puzzle (home page) | Best score and unfinished game, in a browser database called /idbfs. A copy of the game files in UnityCache, so the game loads faster next time. |
| Blockerino | High scores, in the browser's local storage |
To remove all of it, clear this site's data in your browser settings (often called "cookies and site data"). This also resets your best scores.
Ads in embedded games
Games that we embed from a publisher's server, instead of hosting them ourselves, can show ads. The publisher and its ad partners, which may include Google, can use cookies and similar technology in the game, including to show ads based on your visits to this and other websites. The publisher's own privacy policy applies to those games and to what they save in your browser.
You can turn off personalized ads from Google in Google Ads Settings, and from many other ad companies at aboutads.info.
Our own pages
The code of BlockBlast100 itself sets no cookies and includes no ad or analytics scripts. The two games we host, Block Blast Puzzle and Blockerino, show no ads. On October 29, 2026, we opened both of their pages in a fresh Chromium profile, started each game, rated Block Blast and recorded every network request. We saw no cookies and no requests to other websites. That test ran on our own copy of the site, without Cloudflare in front of it.
If we add analytics or ads outside the games, we will update this page to say which services are used.
Links to other websites
Some pages link to other sites, such as PLAY100, the Blockerino project on GitHub and the official Block Blast! app site. Those links open in a new tab, and the other site's own privacy policy applies there.
Children
PLAY100 makes its games for a general audience aged 13 and over. We don't knowingly collect personal information from children under 13. If you think a child has sent us personal information, email us and we will delete it.
Changes to this policy
When this policy changes, we will update this page and the date at the top.