Quick typz0rz
Good move adding the difficulty selector, i went with easy mode but it took too long for me to get into the faster/more fun stages. Combos are a nifty incentive as well. You might want to make a difficulty level where large single letters come in. I know that really young kids would benefit from that. You'll then have a slightly broader range of audience. I think the NG audience might not be so kind... just take the constructive stuff! Overall - good job!