For many people, the word-guessing game Wordle has become a small daily treat. But it has also inspired numerous other games that tweak Wordle’s dictionary, gameplay, or overall concept. Adam Engst started out thinking he could put together a complete collection but eventually stumbled on a site that caused his head to explode.

What is Wordle? It’s the Internet’s latest word-game craze, and it’s quick and easy to play. We show you how.