Simplicity isn't a bad thing.
It's simple and amusing. The controls work well, and the various speed and areas the pumpkins fall from make it unpredictable.
Things I would add if you can:
The all important pause button. Never know when your high score is going to vanish because you needed a break and couldn't take one.
A mute button. The music isn't bad, but it doesn't stay fresh very long, and how long that is will be different for everyone. Best to give them the option.
Everytime I ended the game, I saw something flash by that looked like a score count, but it would only flash and then restart the game. I dunno if that was a score submission or just a read out, but you should fix it so that it sticks. And, if you haven't and still can, put up a leader board. Everyone loves leader boards.