Counter Slayer uses the same UI library I hand built for Table Slayer[0], so it was a little easier for me to get that one going. I used to run design for Elastic, and built their React design library (with some great coworkers) so I'm used to heavy visualization work (having redesigned Kibana years ago). It's just fun for me to take all that experience and build weird little projects as far as I can take them!

I built Counter Slayer specifically for 3D board game inserts, and that's really all I use it for. It sits on the shoulder of Svelte and Threlte (Three.js) for most of the hard stuff.

Being a user of your own product is everything. Every designer I've ever hired were good, not so much because they were a great designer, but because they understood the product and could sit in the user's seat.

[0]: https://tableslayer.com