Good work, but a little boring.
Well, the coding is really good, and neither the art nor the music left anything to wish for. In other words, great job on the game. That said, it just wasn't very much fun. It got a bit repetitive, and I usually like word games so it's not that. Maybe if you made the board bigger (more letters), and maybe some more functions/elements, like some kind of power-ups.
Anyway, nice work guys.