Magic Squares is a fun, and brainstorming game built based on web technologies.
How to play the game: put the numbers in order so that they read from 1 to 8. The 0 is the - empty - cell. Click on any number next to 0 (top, right, bottom, or left) to switch places.
You can install this app as a PWA on your mobile device, moreover, it is available as a browser extension as-well-as a web application:
Chrome: https://chrome.google.com/webstore/detail/magic-squares/oohpeiokibjancjoajhgdpoefeokepjb
Edge: https://microsoftedge.microsoft.com/addons/detail/cnmiahokkejnnghafohdgippdoepcpgd
Firefox: https://addons.mozilla.org/en-US/firefox/addon/magic-squares/
Opera: https://addons.opera.com/en/extensions/details/magic-squares/
Webapp & PWA: https://webbrowsertools.com/magic-squares/
Support & FAQ: https://mybrowseraddon.com/magic-squares.html