A little presumptuous to say it is the world's "favorite" guessing game... But I had fun for a few words. It was nice you could press the enter key on mobile and keep the keyboard up.
Are you thinking of doing a daily word? Or just a random dictionary word each time you refresh?
I've always been a backend/systems kind of guy.
For the frontend for this I used Vue.JS as a learning experience. Overall it was straightforward and quite pleasant.
The hardest part was the mental process of giving up on server-side business logic enforcement (such as anti-cheating). At the end of the day ... "it's just a game" :)
It's a random word each game (but the URL is shareable with a friend to play the same word).
TBH I've had it up as-is for a decade as a classical web app, but just converted it to a frontend-only app to eliminate most hosting costs.