Not terrible...
But wasn't much fun either. It looked good, and I liked having the option of which control set up to use, but there was almost no variety, just the same thing, but longer.
Also, I thought the gap between levels was a bit too much. I thought I could speed things up by investing in the magnet, but it turns out it's almost useless for the fast moving acorns, which most of them seemed to be, and then I was left having to do everything I had already done, again, just for one more skill point. At that point I gave up, sorry, but it just didn't grab me.
So it looks good, sounded good, and I liked the control option, but the gameplay itself didn't grab me much.