Related: this one also has some nice visualizations that help illustrate corresponding practical applications for each element.
https://elements.wlonk.com/ElementsTable.html
And if you're ever feeling particularly masochistic, I built a slide puzzle game which randomly chooses elements and challenges you to re-arrange them by atomic number.
I love your slide puzzle too. Very cool with different hint levels, where you can have just the element symbol or the full name as well. Surely trivial for chemists but not so for me.
Also really like how the Timeline fades out the elements to filter by year.
Hmmm... I wonder if its a HiDPI scaling thing? I tried the site on a couple browsers (Safari, Chromium) and even on a 4K monitor it only fits Hydrogen to Nitrogen.