This is pretty cool!

Would like to see explanations for the connections which are sometimes not obvious.

Maybe make a video showing how it adapts as you make guesses. I wasn't sure what was happening when the first green arrow showed up.

I also like NYT Connections and have the feeling a better version could be created that would, like this, let you try out 2 and 3-word groupings visually before committing to a possible red-herring.

I built a "word game engine" using a mix of AI, embeddings, wikidata, some bigram sources, wordnet, and a few others. I used all this to train a huge matrix of word associations. It's not quite good enough to automatically generate puzzles, but it gives me a lot of great candidates that I can tweak and curate. All the puzzles on the site are hand-picked and partially designed by me.

I think some of these chain puzzles are pretty neat. See if you can figure some of them out on hard mode (no hints).

I also built a clone of NYT Connections [1] using the same word engine.

[1] https://puzzles.madebynathan.com/clusters