It needs a little work
How about combos or some varity in points. Most words I wanted to put an 's' on I couldn't. If the s is available to make words plural than that is a major problem that should be fixed. Also when does this game end? I made it to round 6 and quit after that. It does not seem to have an ending. Another problem is the fact that this is a 4 X 4 grid. There can only be so many possibilities, then you are waiting for the timer to finish with nothing to do. Ok for a few minutes of fun though