Great, simple, addictive game. My whole family is playing. You’re on to something here.
Some issues/problems:
The exclamation banner (whoa, etc) can hide the topmost letters right when you need to see them. It should be moved or retired.
Games should end because the player can’t come up with a word quickly enough, not because no words are possible with the available letters. I’ve had several games end where I have nothing but consonants piled up. It’s demoralizing when that happens.
I also find the leaderboard a bit hard to understand.
Again, great game.