The NYTimes' Spelling Bee is a great word game. My Bogdle word game is also good, but not quite as professional, and maybe not as bug-free and "sticky".
That being said, Spelling Bee really needs a "this is a valid word" CSS class on the guess container BEFORE you submit it.
I think I now know why the New York Times game Spelling Bee (which is a neat twist on Boggle) requires at least 4 letters to make a word: there are just too many obscure 3-letter words in the English language.
Just as a reminder, I have a daily Boggle-like web game called Bogdle.
A recently-added feature is the ability to share when you find the pangram (word using all the letters), which is a quicker dopamine hit than finding ALL the possible words.