Arkanoid on the page dedicated to 404 is a classic, but why not replace it with the equally classic tetris?
The version of tetris that will be used is Blockrain.js, a JavaScript clone of Tetris.
Here (https://github.com/mrwalakala/SP-Tetris) you can find the whole package, which contains a page and the dedicated widget (“TetrisJS”).
The scoreboard will also be implemented soon!