I almost stopped playing this one because it was becoming repetitive.. them boom! New mechanics! Was a lot of fun, and I played for 20-30 minutes I reckon. :) Music is charming, and its a nice homage to Super Monkey Ball. I think I must have been on the last level, there were lots of fast swinging hammers, and I just couldn't get through it. Still had a great time though.
If you added a way to get back to the action quicker (takes a while to fall to the water, then start getting momentum again) I reckon I would have played longer. Nice work!