>>106007249
largely but I had to learn about how to draw a canvas from raw data. you see it is ARGB with no transparency and then you for-loop over each pixel in the square block

I'm not with 2d or canvas so that is stolen ofc
and you see math.random on JS is terrible

https://thenextweb.com/news/google-chromes-javascript-engine-finally-returns-actual-random-numbers
the squares you see are the repeating squares because it doesn't matter to waste clock sizes on drawing the entire screen space in a large canvas

so just generate a tiny one and make a tiling background.