The app is great, the downloadable content less so – Labyrinth 2 Review

The app and its original (included) levels are great. Very well designed, with a lot of thought put into them. Unfortunately, once you've played those, it becomes old very quickly. There are plenty of downloadable levels, but they range from mediocre to just plain terrible. The vast majority of them appear to be immature and derivative -- for example, there are hundreds of downloadable levels that are variations on "hold the device upright to win", and literally you just sit there holding your iPhone vertical to win each level. Where's the challenge in that? Many other levels just contain a plethora of cannons. If the original developers would put out another 20 levels for $0.99, I'd totally buy them.
Review by iPhoneYouPhoneWeAllPhone on Labyrinth 2.