Really good
Excellent presentation and fun, very intense gameplay. Interesting to allow any words but to put a great emphasis on using words with certain given letters.
People should stop complaining about playable words- the words that are playable follow normal standards for any word games (Scrabble and Boggle for instance). You can't play words that are always capitalized or that require hyphens. You can't play abbreviations. The word list is perfectly acceptable. Also, I doubt it's created by the game's creator. It's probably a word list of legal word-game words he pulled off the internet somewhere.
I see complaints about "Jew" and not "Jewish" but this is because "jew" is also a verb, not just a Jewish person. Same idea with countries- "turkey" would be perfectly legal but "France" or "Yemen" would always be capitalized.