This article shows a fully compile-time implementation of the popular game Wordle in C++20, and explains its inner workings:

wordlexpr: compile-time wordle in c++20

by Vittorio Romeo

From the article:

It felt wrong to not participate in the Wordle craze, and what better way of doing so than by creating a purely compile-time version of the game in C++20? I proudly present to you… Wordlexpr!

https://www.youtube.com/watch?v=wp3LPrhu2Sk