Show HN: I built a football trivia game using only Vanilla JavaScript and S3

Hey HN,

I wanted to share a small weekend project I’ve been working on called Guess The Badge. It’s essentially Wordle for football (soccer) badge. You get a redacted badge and have to guess the club.

I used this project as an excuse to step away from my usual work and see how lean I could keep things. The whole thing is pure Vanilla JS, HTML5, and CSS3, hosted on S3/CloudFront. The entire game logic lives in a single app.js file that’s only about 400 lines.

The part I’d love your eyes on is the daily logic. Instead of a database, I’m using a seeded RNG based on the client’s local date (Math.sin hack) to ensure everyone gets the same club.

I’m looking for specific feedback on:

The Seeding: Does the daily reset feel consistent, or does it break across specific time zones?

Mobile UX: I tried to manually prevent layout shifts when the virtual keyboard pops up—let me know if it feels jumpy on your specific device.

Link: www.guessthebadge.com

Thanks for checking it out!

Pretty fun, I blew it in arcade mode at 33. But I got the daily one instantly.

One suggestion I'd make is probably making arcade a bit shorter. 212 European clubs is a daunting task and created a feeling of early fatigue for me. Since it's randomized each time, maybe a set of 50 would be fun?